I too have the same issue and after dropping close $1400. on this guitar I'm pissed off. At first I just thought it was the modeling. I kept doing you tube searches to see if anyone else had this issue. I never really ever found anything except the palm muting issues.Then I found this thread and several others. I just cannot understand how Line 6 can honestly say there is no issue. I have purchased so much gear from these guys , spider amps, Ux2, Pod Farm, HD500, HD500X, Amplifi 150, Firehawk and now the Helix. Its really wrong and dishonest to not recall these 89f and fix the issue or at least give a different model.