Engine gummed up ? Put it in oven ?
Ran it & flew plane a couple of yrs ago then put it in the attic. Guess I neglected to put after run oil in it. It is on old OS 40 FP. Remember reading about putting engine in oven to free it up. Put it in oven at about
210 for an hour, no luck. Should I get it hotter? Remove plastic throttle Arm?