I don't have the issue with my spider IV 120 but it seem the problem I have is with the MKII pedal. When I tune the guitar it seems fine but when go play a chord it's all off. I had my guitar intonated. But if I do the fifth fret finger tuning and get it in tune and go back to the tuner it's showing its all out of whack. But the chords and the guitar seems to play fine. It's all in tune. is there away to get this pedal recalibrated? Thanks.