Chris I did the grow the piston stunt by heating with a torch on one of worn piston/liners we did get a better compression came up we did get a couple of short fires and yes loud
will have to see if we can get a run fuel 70./30 drone mix used also fired on the davis premade fuel which is the 32-33 %?? on ether plus kero and oil of course ,will try the electric drill thing
run for a couple of minutes oil only to limber up will loosen head A tiny bit to kill compression to grt a good spin martin