Thanks for report, we will check it

I had a case. Interestingly, the tank is already 100% assembled. And the game offers to install a silencer.
During installation - the problem described above.

Still haven't fixed the muffler installation? C'mon, guys... I'm having the same problem.

I renovated two of these tanks recently and I didn't notice any problems, but then I read this thread and tried again. I also was unable to progress past 10%, but eventually I was successful. When I screwed in those two bolts, I rotated my camera so that I was looking at the tank from above. It worked then.

Additional info: I didn't have engine cover installed. My guess is other parts get in the way, like that plug situated right next to the muffler pipes. Maybe part order is important, so try experimenting (i.e. muffler first).

Of course it should not be that way, but at least I was able to install everything.

I'll share today's experiment results:
I tried removing and installing all the parts on that tank, including that muffler, from various angles. I see that screwing anything in requires you to see the bolthead, at least partially (I think it's true for all the tanks). If you begin to screw it in and it hides behind some part, the process stops. You need to adjust camera angle to see the bolthead again.

In case of a muffler on this tank, the hull gets in the way from almost any angle, except from the top and bottom. It's tough to look at it from the bottom, so for now only top angle works.