diff --git a/RSPModelLib/include/RSPModel_datatypes.h b/RSPModelLib/include/RSPModel_datatypes.h
index bbdc715..9a0f330 100644
--- a/RSPModelLib/include/RSPModel_datatypes.h
+++ b/RSPModelLib/include/RSPModel_datatypes.h
@@ -49,17 +49,19 @@ typedef struct rspmodel_texcoord { short u,v; } T_RSPMODEL_TEXCOORD;
 typedef struct face_flags {
 	unsigned int fUnknown0:1;
 	unsigned int fUnknown1:1;
+
 	unsigned int fHasTexture:1;
 	unsigned int fIsQuad:1;
 	unsigned int fSeparateColorVertex:1;
 	unsigned int fHasColor:1;
 	unsigned int fHasExtraBytesBeforeColor:1;
+
 	unsigned int fUnknown7:1;
 	unsigned int fUnknown8:1;
 	unsigned int fUnknown9:1;
 	unsigned int fUnknown10:1;
 
-	unsigned int reserved:21;
+	unsigned int fReserved:21;
 } FACE_FLAGS;
 
 typedef struct hob_face {
diff --git a/RSPModelLib/src/hob_parser.c b/RSPModelLib/src/hob_parser.c
index c9d2319..4cbfb22 100644
--- a/RSPModelLib/src/hob_parser.c
+++ b/RSPModelLib/src/hob_parser.c
@@ -324,7 +324,7 @@ static unsigned short ExtractObjParts_faces(T_RSPMODEL_OBJ_PARTS* pObjPart, cons
 		}
 
 		if (pParams->debug_mode) {
-			printf("[DBG] > Face %d details: flags:0x%X b1:%d b2:%d b3%d bsize:%d\n", i, pObjPart->faces[i].flags,
+			printf("[DBG] > Face %d details: flags:0x%X b1:0x%X b2:0x%X b3:0x%X bsize:%d\n", i, pObjPart->faces[i].flags,
 					pObjPart->faces[i].b1, pObjPart->faces[i].b2,	pObjPart->faces[i].b3,	pObjPart->faces[i].bsize);
 			printf("[DBG]   - Type is Quad: %d\n", pObjPart->faces[i].flags_bits.fIsQuad);
 			printf("[DBG]   - Have color: %d\n", pObjPart->faces[i].flags_bits.fHasColor);
diff --git a/RSPModelLib/src/hob_struct2.h b/RSPModelLib/src/hob_struct2.h
index 846e05b..07aca35 100644
--- a/RSPModelLib/src/hob_struct2.h
+++ b/RSPModelLib/src/hob_struct2.h
@@ -61,12 +61,12 @@ typedef struct PACK hobfile_obj_header {
 	unsigned int object_parts_offset;		// Object parts descriptor offset
 	unsigned int object_parts_offset2;		// Facegroup descriptor offset (subpart of Object parts descriptor)
 
-	unsigned int opt_offset1;			// Optional offset - empty on last obj_header - point to after end mask ffffff of current bloc
-	unsigned int opt_offset2;			// Optional offset - empty on last obj_header - point to after the previous opt_offset1
+	unsigned int object_parts2_offset;		// Optional offset - seem present in tieinter_HOB - point just after the 0xFFFFFFFF of the first one
+	unsigned int object_parts2_offset2;		// Optional offset - seem present in tieinter_HOB
 	unsigned int reserved1;			// Always zeros ?
 
 	unsigned int subparts_namelist_offset;	// Point to an array of string value (8 chars) + ID (2 chars - 1 to obj_parts-1). Seem like name of articulation points (some have name like "node_86").
-	unsigned int effects_offset;			// Empty in gun_turret and no datas after, xwing have 0x5006. worddevastator should have the answer...
+	unsigned int effects_offset;			// Empty in gun_turret and no datas after, xwing have 0x5006, present in koelsch. worddevastator can have more answers...
 	unsigned int properties_offset;			// Offset to different string (a_b/zf/zt/zb/etc.) Animation datas ? Empty with 6x float in train_hob
 
 	float unknown4;			// Probably scale: 1.0F/1.125F