well fastlanes diagnosis was right ,my rear center bone fell off the cups so the gastank was holding it..upon checking after rading fastlanes post on my thread i checked the bottom and guess what?chassis is bent..rear part was bent..is it because i don't have a bumper there? i was trying to put one in but with the wing mount i cant do it..unless the bumper i have is for the buggy's front????its actually the one on the front mounted now.. 
i don't know if u can see the bend on the chassis from this pix.
i don't know if u can see the bend on the chassis from this pix.




