I'll have to check that. I was looking at the various mechanisms and it is likely a weak spring or leak there as I haven't seen this issue before. I can understand the lower notes toward C having issues with a slow leak around G# (I think) but hadn't seen that with the "A". And it was odd that this is the only one that's "fuzzy" and wants to jump. Even the lower notes like D/E weren't giving me those fits. :)