after being away from my glow plane for about 4 years i find my self having to relearn some stuff. i learn to fly on my sig senior than switched over to electrics for the last few years. i just installed a new magnum 70 4-stroke on it and started the engine break-in process by the book and after about 25 minutes of break in time, i went to restart it again and nothing. i checked the glow plug and its good. i think maybe the fuel lines came off in the tank becuase when i pulled off the fuel line to the carb and cranked the engine with the electric starter no fuel came out. am i doing this right. i dont wanna remove the tank if i dont have to. the first 10 minutes of run time it smoked heavily and vibrated pretty bad. i repeated the process 3 more times in 5 miniute intervals leaning it 1/4 turn each time. the wierd thing was i thought i would see it running a little better each time i leaned it in but it ran the same. rough and heavy smoke. any help please?