diff --git a/src/common/types.cpp b/src/common/types.cpp
index 81d3b92..27ac4bc 100644
--- a/src/common/types.cpp
+++ b/src/common/types.cpp
@@ -73,15 +73,6 @@ void weather::load(const buffer &b)
     }
 }
 
-void weather_group::load(const buffer &b)
-{
-    READ(b, n_segs);
-    segments.resize(n_segs);
-    READ_STRING_N(b, name, 0xA0);
-    for (auto &s : segments)
-        s.load(b);
-}
-
 void water::load(const buffer &b)
 {
     READ(b, unk0);
diff --git a/src/common/types.h b/src/common/types.h
index d525607..cea88c4 100644
--- a/src/common/types.h
+++ b/src/common/types.h
@@ -135,11 +135,21 @@ struct weather
 
 struct weather_group
 {
+    uint32_t unk0; // racing
     uint32_t n_segs;
     std::string name;
     std::vector<weather> segments;
 
-    void load(const buffer &b);
+    void load(const buffer &b, bool aim_racing = false) {
+        if (aim_racing) {
+            READ(b, unk0);
+        }
+        READ(b, n_segs);
+        segments.resize(n_segs);
+        READ_STRING_N(b, name, 0xA0);
+        for (auto &s : segments)
+            s.load(b);
+    }
 };
 
 struct water
diff --git a/src/mmp_extractor/mmp.cpp b/src/mmp_extractor/mmp.cpp
index 1a251c2..3da1598 100644
--- a/src/mmp_extractor/mmp.cpp
+++ b/src/mmp_extractor/mmp.cpp
@@ -42,19 +42,16 @@ void water_segment::load(const buffer &b)
     wg.load(b);
 }
 
-void weather_segment::load(const buffer &b)
-{
-    wg.load(b);
-}
-
 header_segment *header::create_segment(const buffer &b)
 {
     HeaderSegmentType type;
     READ(b, type);
 
     header_segment *segment = 0;
-    switch (type)
-    {
+    switch (type) {
+    /*case HeaderSegmentType::unk0:
+        segment = new unk_segment;
+        break;*/
     case HeaderSegmentType::water:
         segment = new water_segment;
         break;
@@ -76,7 +73,7 @@ header_segment *header::create_segment(const buffer &b)
 
 void header::load(const buffer &b)
 {
-    READ(b, unk0);
+    READ(b, version);
     READ_WSTRING(b, name1);
     READ_WSTRING(b, name2);
     READ(b, width);
@@ -84,6 +81,10 @@ void header::load(const buffer &b)
     READ(b, n_header_segs);
     segments.resize(n_header_segs);
     READ_STRING_N(b, name, 0xA0);
+    if (version == ver::aim_racing) {
+        uint32_t unk0[4];
+        READ(b, unk0);
+    }
     for (auto &s : segments)
     {
         s = create_segment(b);
diff --git a/src/mmp_extractor/mmp.h b/src/mmp_extractor/mmp.h
index c444c2b..c152656 100644
--- a/src/mmp_extractor/mmp.h
+++ b/src/mmp_extractor/mmp.h
@@ -34,6 +34,7 @@ using Height = float;
 
 enum class HeaderSegmentType : uint32_t
 {
+    //unk0        =   0,
     water       =   1,
     weather     =   2,
 };
@@ -41,29 +42,47 @@ enum class HeaderSegmentType : uint32_t
 struct header_segment
 {
     HeaderSegmentType type;
-    uint32_t unk0;
+    uint32_t unk0; // version?
     uint32_t len;
 
     virtual void load(const buffer &b) = 0;
 };
 
+struct unk_segment : public header_segment {
+    std::string name;
+
+    void load(const buffer &b) override {
+        uint32_t unk0[6];
+
+        READ(b, unk0);
+        READ_STRING_N(b, name, 0xA0);
+    }
+};
+
 struct water_segment : public header_segment
 {
     water_group wg;
 
-    virtual void load(const buffer &b) override;
+    void load(const buffer &b) override;
 };
 
 struct weather_segment : public header_segment
 {
     weather_group wg;
 
-    virtual void load(const buffer &b) override;
+    void load(const buffer &b) override {
+        wg.load(b);
+    }
 };
 
 struct header
 {
-    uint32_t unk0;
+    enum class ver : uint32_t {
+        aim12   = 0x100,
+        aim_racing   = 0x101,
+    };
+
+    ver version;
     std::wstring name1;
     std::wstring name2;
     uint32_t width;
diff --git a/src/model/model.cpp b/src/model/model.cpp
index f113c7d..f63cdcc 100644
--- a/src/model/model.cpp
+++ b/src/model/model.cpp
@@ -475,6 +475,11 @@ void block::header::load(const buffer &b)
     else
         READ(b, unk2[2]); // unk4_0 - related to unk4 - some vector3f
     READ(b, unk4);
+    if (gameType == GameType::AimR) {
+        // not always?
+        float unk;
+        READ(b, unk);
+    }
 }
 
 void block::load(const buffer &b)