Just wanted to flag that on the M109 models, the drive sprocket seems to be incorrectly modelled as the spokes don’t line up with the track and instead poke through it. Seems to be true for all of the M109 variants for the different nations.
Tracks are not “real”, they don’t interact with the sprocket. On some tanks it lines up, on some it doesn’t, as you drive it’ll eventually line up again and then phase trough each other again.
I do agree that it would be nice if they were to systematically line up in the hangar, but it would be a lot of work for nearly no gain at all.