It seems like a produvt sold by slick 50 for 2 strokes we use to use in our bikes, we used a HIGH octane fuel and burned a hole in the top of the piston, the sides of the piston and sleeve were in perfect order.It stinks to have the thieves in our hobby, sorry if it was stolen. I thank you for all the help and would like to become a customer of Montey's. I have been following him on this thread for awhile now. I really am likeing the Nova engines, I am surrounded by O.S guys.