Ive been working on this 372 for a while, it was a mess from running vegetables oil as bar lube. I finally got it all back tougher, put in the aftermarket coil I purchased form an arborist site sponsor, I was very sad. Could not figure it out. I thought the chain brake was on, because I had worked on that, it thought maybe something was biding in the engine, it was bad! I reinstalled the old 385 coil I stole off a future project and boom!! It runs great. anyone have good used coil to sell? I will contact the Dukes to check on their refund policy