the de-sinc-ing is generally caused by people holding the sinc button too long while changing modes. you must just give it a click and its fine. I would suggest the raven it dosnt use the sinc button. IMO the use of the sinc to control a mod was not a good idea. but it was how the whole RF idea started, and everyone just followed suit. it would be just as easy to code the device to use the up on the d pad for three seconds to control the chip. nobody liked this idea, and everyone wants to complain about the sinc button.