RE: My COX is STUCK
Agree with Tom here. Had a similar problem with a 049. Just dunk it in a jar with fresh model fuel and put the lid on. No worry about seals, plastics etc etc being dissolved. I left mine for a week and only gave it a gentle shake whenever I managed to pass the jar. It came out perfectly, even the tank's gasket was OK.
If this doen't work, then go to the next phase (heat/ acid/ hammer/ explosive...hehe)