Hi Nick
Yes there is a difference like you i always thought the track was to low on the panzer III and i think the panzer 4 will be the same heng long make a lot of compromise to make the tanks cheap to produce pan/tiger being the biggest .But then it gives us something to do ,they are getting better !would like to see your post havnt done this to my panzer III I fitted schurzen so no one can see it but when i do a retro on the gearboxes /motors putting in 3:1 gears and speed 400 motors i may change the return rollers idler and drive sprocket.

regards pete