John as you know I was going to build this but you beat me to the drop hence I went with the AT-1 and you know how that went ,thoes awfull tracks bent and twisted parts not good ,now strange you say about the plastic not liking the glue ,the sandy coloured plastic of your kit is pretty much hobbyboss standard the AT-1 was green wich I thought unusual for hobbyboss the track plastic was brown par for the course I suppose but neither liked glue ,I've been using mr hobbyS over tet recently not for any real reason but had noticed it was more aggressive than tet but even this struggled to bond parts so I don't think your alone on this I feel your pain . Don't let it beat you hang in there im sure it will all come good. Dave.
PS many moons ago I built the zvesda kit seem to recall it wasn't that bad had I known you were going to butcher what your doing I would have recommended it saving yourself a few . (Squids).