Greg from hummingbird contacted me about my problem with my 365i. he told me a few things that might be wrong, told me to find someone with the same transducer that i have and put my unit on it to see if it still messes up or not. he said it does not have to the same unit because any one with a 200/83khz would work no mater what unit they have. so if there is any one around conway that has one, i could meet you at a lake and see if it works or if its the head of the unit. thanks