Tkank You for Your comments and Your advices guys!
Yes, I do like the kit very much. I think, it is a very good moulded kit, engineered intelligent with a few of great solutions. Every change I made so far I would have made on every other kit, too, I am just no typical OOTB-modeller. And I think, one could make a really good model from this OOTB! Those of us, who like german vehicles, should not missed it!
I have to admit, that I am simply to lazy to change the rubbers, after they are painted and weathered once...
The cooler cap is a good advice, will change this, had not seen this before - that's one of the reasons, I like this forum that much, there is allways someone helping You. Thanks a lot!