I recently picked up my 1st nitro truck at a flea market. It is a Tower Terror monster truck. Igot some fuel for it (O'donnel 20%per the manual) and everything I needed to fire it up. Igot it to start after a few pulls but my question is..Is it normal for a little fuel to come out around the glow plug or do I need to try to find some way to seal it up?Or am I better off replacing the head?The glow plug has a brass ring on it. Its a Duratrax carbon speed plug. I am new to nitro so any help is greatly apprieciated.</p>