David...so have you switched out GFCIs to brand new GFCIs and then experienced less problems? I'm more than willing to spend the $15-20 if it will help the problem. Even if I have to replace it every year...that's better than service calls!
I'm in the process of researching brands of GFCIs....is there one better than another? I saw something briefly about a GFCI Panel designed just for hot tubs that is supposed to greatly reduce false tripping. There has to be something we can do!