Please try to dissasemlby few adiacent parts and try again. We fixed the IS-2 assembly order recenly and it might help.

Originally posted by DeGeneralsGoozy:

Please try to dissasemlby few adiacent parts and try again. We fixed the IS-2 assembly order recenly and it might help.

When I put on the gearbox bottom cover, the game only allows me to put on the right brake drum. The left one seems to not exist, even though I have it in my inventory. The earliest I can assemble brake drums is immediately after putting the gearbox bottom in, and that makes the final drive unable to get into place.

Oh wait, issue solved. The right brake drums have gears inside them, which you need to assemble to fit the left brake drum in. The issue was that the gears that require assembly, can't be viewed, due to the brake drum being in the way. This is extremely unintuitive and wouldn't shop up on assembly % as the number of parts is so high.

In the left brake drum, you assemble the gears before the drum. In the right one, you can put the drum in first, of which the ghost image blocks the gears from being put in.