Sadly my employer has kept me so busy there has not been time or energy to work on my little engine...hopeful that will correct soon!.... I did stumble on a modified M90 video and thought I would share with those interested in tuning these sweet little engines...I think he made a different power supply...BUT... Also installed a drip oiler..he bent up some copper tube to run external to lube the piston skirt....I would have drilled the top hole thru bore liner and dripped the skirt from top only...but it is fun to see how other Craftsmen solve lubrication....he has it slowed down pretty good, though not to Gil's engine level of tune I think...thought I would share link.