Crockski if you look at the fuel line in and there are air bubbles in it you have a presure leak in the system and it will be hard to start and keep running. [] Another place to look seeing as how its been setting is the glow plug. Replace it even if you don't think its bad just for peace of mind As for the problem with the bellcrank moving I'm afraid you have some bad bearings or its been disassembled and not been put back together properly. It should spin freely but not be able to move in any direction. Use lock tight on everything that is screwed in because if you could buy a vibrator as good as these RC cars you would be a happy man [:@] Don't use sealant on anything period. If it takes a gasket and it leaks, replace the gasket Good luck m8 [:-]