How to stop soft plastic from melting hard plastic on 2010s figures???

Just found out about this, checked my HFTD Banzaitron, and thankfully there's not much damage, but I would like to prevent more, what do I do???

Disassembly of the rear treads/hip skirts is almost impossible without just cutting the tread, I've seen some sources say to use a spray on clear coat, others say say use flex seal, are there any upgrade kits/stls that I can use??