Horst;
NICE job!
I've not seen that Tristar kit built up and it does look mighty fine indeed. And yeah, I can sympathize with you on the "sausage finger" and smaller parts problem!
It all looks pretty cool, to me - I actually would not have noted the error with the MG had it not been ID'd before! (I have the CH early kit and the Dragon early w/ zimm kit and I'll be making sure I don't commit THAT error - there will be plenty of other opportunities for me to fall into!

)
There is / are about one fairly salient thing I think you could and should fix on your otherwise really sweet build... I think those schurzen plates always tilted out from the hull at their top (or inwards at the bottom - however you see it) - they did not hang down straight. This is pretty obvious in many pics of the real thing and gives this beast a rather (IMO) curious and cool look.
It's pretty nice and the figs are pretty good, too. All up, looks like those dastardly commies are in for a little kickin'!
Cheers!
Bob