My nitro evader has only 3 tanks of fuel through it besides break in and now it won't start. I took it apart and sealed every thing, put a new o-ring on the fuel tank lid, it has good compression. I even went through the trouble of replacing the piston pin, glow plug, head gasket, and fuel lines. When I go to start it I get air pockets in the fuel line going to the carb. If anyone can point me in the right direction it would be greatly appreciated as this has been going on for a couple of weeks now and I'm getting sick and tired of not being able to run it
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