Use a table ban saw to hack off the 340 piston crown .

chewing gum as bearing spacers. that's amateur hour, buddy.

you need to get yourself some some mil spec duct tape or use what the pros have been for eons-- 100mph tape!

don't forget to add the bailing wire to your shopping cart. so many uses for that! you could measure the squish! you could make a timing pointer! you could hang part from the rafters!