I’ve shipped 4 amps to Mesa without any problems, the 5th should get there tomorrow, but I’ve had 3 amps damaged on their way to me from other people due to bad packaging. Mesa always ships my amps back in one of their boxes and packaging no matter how good I pack it. I would send it to Mesa and have Mike B. do the lll+ mod and whatever else is needed. I think you’ll be happy with the results.