Originally Posted by savannahmick

I decided to open up motor and examine and remove shim but I can't tell if this is another .30 shim on head button or part of the head button. I didn't want to pry on it because it's soft alum. also the pic of shims is the other ones installed when i opened .10 copper/.20 copper/.30 alum plus the .30 alum. on button if it's a shim thats stuck or part of the head button? Whats the proper amount after break-in .80 right? So I need to remove small .10 copper or just put it back together? I took pic of sleeve /piston how does it look to you and which way does the arrow on head button towards carb or manifold? I am trying to learn more about Novarossi engines and engines in general thats why I ask and don't want to cause more problems. Thanks Guys!