There is thread on here about the inshore Revo's having that exact problem, everyone I know gave up on them and switched to something else. I researched it and talked with several repair shops, all said it was very common and even after a fix it may not last long.

I sent mine back twice on warranty and they fixed it, at least for about 10 casts, then it would start doing it again. The next time I sent it in they sent me a new one, never used it, sold it on eBay.

Not everyone with the smaller revo's had this problem, but the repair shops said it happens too often.