diff --git a/gmflib/src/types.rs b/gmflib/src/types.rs
index 8f54152..b572875 100644
--- a/gmflib/src/types.rs
+++ b/gmflib/src/types.rs
@@ -673,8 +673,7 @@ pub struct LightObject {
     #[gma_name("NODE_NAME")]
     pub name: String,
     pub tm: TransformMatrix,
-    #[gma_skip]
-    pub target: String,
+    pub tm2: Option<TransformMatrix>,
     #[gma_name("LIGHT_TYPE")]
     pub light_type: LightType,
     pub shadows: LightShadows,
@@ -684,17 +683,24 @@ pub struct LightObject {
     #[gma_name("LIGHT_INTENS")]
     pub intensity: f32,
     pub aspect: f32,
-    #[gma_skip]
-    pub unk1: [u8; 8],
+    #[gma_skip(self.light_type == LightType::Omni)]
+    pub hotspot: f32,
+    #[gma_skip(self.light_type == LightType::Omni)]
+    pub falloff: f32,
+    #[gma_skip(self.light_type == LightType::Directional)]
     pub attn_start: f32,
+    #[gma_skip(self.light_type == LightType::Directional)]
     pub attn_end: f32,
     pub tdist: f32,
     pub use_far_attenuation: FarAttenuation,
 }
 
-#[derive(Debug,GMISerializable,GMASerializable,Serialize)]
+#[derive(Debug,PartialEq,Eq,GMISerializable,GMASerializable,Serialize)]
 pub enum LightType {
     Omni = 0,
+    Target = 1,
+    Directional = 2,
+    Free = 4,
 }
 
 #[derive(Debug,GMISerializable,GMASerializable,Serialize)]
@@ -931,7 +937,8 @@ pub struct RBCollectionObject {
     #[gma_name("SOLVER_TYPE")]
     pub solver_type: u32,
     pub rigidbody_list: RigidBodyList,
-    #[gmi_read_parameters(disabled_pairs)]
+    // Some DSL-IRL 2.6 GMFs have this set to ffffff / ffffffff for some reason..
+    #[gmi_read_parameters(if disabled_pairs < 4096 { disabled_pairs } else { 0 })]
     pub disabled_collision_pairs: Option<DisabledCollisionPairList>,
 }
 
diff --git a/gmfmacros/src/lib.rs b/gmfmacros/src/lib.rs
index 21759e2..b380d9f 100644
--- a/gmfmacros/src/lib.rs
+++ b/gmfmacros/src/lib.rs
@@ -229,6 +229,35 @@ impl GMAValue {
     }
 }
 
+struct GMASkip {
+    #[allow(dead_code)]
+    paren_token: syn::token::Paren,
+    fields: syn::punctuated::Punctuated<syn::Expr, syn::Token![,]>,
+}
+
+impl syn::parse::Parse for GMASkip {
+    fn parse(input: syn::parse::ParseStream) -> syn::parse::Result<Self> {
+        let content;
+        Ok(Self {
+            paren_token: parenthesized!(content in input),
+            fields: content.parse_terminated(syn::Expr::parse)?,
+        })
+    }
+}
+
+impl GMASkip {
+    fn from_attrs(attrs: &Vec<syn::Attribute>) -> Option<syn::Expr> {
+        if let Some(attr) = attrs.iter().find(|a| a.path.is_ident("gma_skip")) {
+            let parameters = syn::parse2::<GMIReadParameters>(attr.tokens.clone()).expect("invalid gma_skip attribute");
+            if parameters.fields.len() != 1 {
+                panic!("gma_skip must have exactly one attribute");
+            }
+            return Some(parameters.fields.iter().next().unwrap().clone());
+        }
+        None
+    }
+}
+
 #[proc_macro_derive(GMASerializable, attributes(gma_name, gma_name_bare, gma_value, gma_skip, gma_space_delim))]
 pub fn gma_serializable_macro(input: TokenStream) -> TokenStream { 
     let input = parse_macro_input!(input as DeriveInput);
@@ -266,7 +295,7 @@ pub fn gma_serializable_macro(input: TokenStream) -> TokenStream {
                 }).unwrap();
             let writes: Vec<proc_macro2::TokenStream> = fields.named.iter().map(|field| {
                 let field_ident = &field.ident;
-                let field_skip = field.attrs.iter().any(|a| a.path.is_ident("gma_skip"));
+                let field_skip = GMASkip::from_attrs(&field.attrs);
                 let field_space = field.attrs.iter().any(|a| a.path.is_ident("gma_space_delim"));
                 let field_name = GMAName::from_attrs(&field.attrs)
                     .map(|s|
@@ -278,15 +307,16 @@ pub fn gma_serializable_macro(input: TokenStream) -> TokenStream {
                     .or_else(|| {
                         Some(struct_name.clone() + "_" + &gma_name_from_ident(field_ident.as_ref().unwrap()))
                     }).unwrap();
-                if field_skip {
-                    quote! { }
-                } else {
-                    if field_space {
-                        quote! {
+                let mut cond = field_skip.map(|el| quote! { #el } ).unwrap_or(quote! { false } );
+                if field_space {
+                    quote! {
+                        if ! ( #cond ) {
                             _w.emit(&format!("{} {}", #field_name, self.#field_ident.atom()))?;
                         }
-                    } else {
-                        quote! {
+                    }
+                } else {
+                    quote! {
+                        if ! ( #cond ) {
                             self.#field_ident.write(#field_name, _w)?;
                         }
                     }