Panzer IV needs to be updated for Gustav Line. Don`t worry, I will make the necessary changes sometime soon.
Edit: first tests show that game engine mixes Panzer IVH skirts plate sections from " Sicilian" Panzer IVH and Mainland Italy bicolored Panzer IV. It even mixes whole textures for a single tank from both theatres...I ended up with a hull from a Panzer IVH from July 1944 close to the Alps and the turret from a Panzer IVH in Catania 1943 . I THOUGHT at first it was a bug, but I think now the problem lies in the decals I added for my Fortress Italy Panzer IVH ("panzer iv-h skirt 2,3,"etc). Everytime the game loads Panzer IVH may have full skirts or skirts with one plate removed. In the latter case the decals for the skirt interfere somehow I think,...and "fill" the gap tht should have been empty with a Sicilian version ending up with a mixed odd looking Panzer. Man, modding has its headaches,...Remove the decals for the Panzer IVH and see if it works, for now,..I will upload an ALL IN Updated pack soon.