roboquad <.> rotation sensor dink

does anyone know how to fix problems w/ roboquads head rotation sensor? i tried everything i could think of. if you're gonna post anything, don't say "buy a new one!!!" cause i heard that one before and it didn't work out well, cause,... I DONT HAVE ANY MONEY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!