but…..for work that the MC factory might not want to do and good techs on the E Coast, there is always Audio Classics in Vestal, NY. They have the skill to go thru the ARC amp and get it in tippy top shape. For a W Coast based Mac expert I strongly suggest Randy Vikan, he fixes factory defects in MC gear, will he did on my MR-85…. like i said, like all of us…good but imperfect..
Carry on
Jim