Hey Guys figured you could help me with my Go problem.Im and electric guy at heart so this engine lark is abit new to me

Just purchased my second 7 port .21 Go engine after having good results with my old one! Only problem is ive got the run this one in myself

Have got all the info off the race industries website,have wrapped head in tin foil and pre heated head to 160* but carnt seem to get it to turn over without the piston getting locked at the top,anything i can do to free this up before i stick it back on the box? Sorry for the dumb questions but its not as easy as plug and go!

Cheers guys