I have a Harmon P-68 and I have an "issue" with the control board. It has a bad spot with the control for my room temp. My dealer says to just replace the control board as you can't fix it. But after some research I found a web site called Brunner's Bits& Pieces and am wondering if anyone on this site has used them and if their work is good? Plus my daughter has much the same "issue" with her P-61.