Greetings, just wondering if anyone else has experienced this - First, I bought both the PC+ 1x12 and the PC+ 2x12. I used my Helix with the 2x12 with a 6-piece classic rock band, started off with a FANTASTIC sound, but noticed as the night went on, the sound started to sound like it was clipping, breaking up, sounding unnaturally distorted. Wasn't sure if it was just my ears from playing all night. Last night I did an acoustic gig with the 1x12 PC+ and my Helix, again started with an AMAZING acoustic sound, but toward the end of the first set, about an hour and 15 min I was noticing the same thing - breaking up, clipping. Turned everything off during the break, 2nd set started off great, then again started noticing the breaking up after about an hour into 2nd set. My percussionist noticed it too, so I know it wasn't just my ears being fatigued. So that's my question: has anyone else has experienced the Helix/Powercab combo sounding amazing at the start of a gig and then slowly deteriorating as the night goes on - thanks!