thank you, and honestly would not have solved it without trusty putty & sanding sponge. ; )
I found the engine deck bulge by closer inspection on one more kit the 754r has it unfortunately too. The wheels are ok. But next time fixing this issue should be easier.
Yes shure, a few pointed (KV group) out the lifting rings on the engine deck, went with the wrong later KV references since the KV-1E in Parola is way too modified in my opinion and most pictures are kind of blurry (Andreas Larka site)
Thanks for the drainage hint, on most pictures it looked like parts which deteriorated from rust.
Should be an easy fix.
I found other little details if it matters to you:
1. the swing arms should have each a round rubber bumper on the bottom. Pretty easy as well.
2. one MG mount has flat bolts, where there should be conical ones (Masterclub has an amazing range of resin bolts, perfect for Russian armor, waiting for them to arrive)
3. there should be three U shaped "hooks" on the rounded armored backside of the engine deck
4. There should be a small hole on each of the movable round periscopes
Best & thanks for the hint!
7. September, 15:22