hello I'm kinda new to the hole nitro seen. i got a older buggie and have no idea what kind it is i do know it is a ofna but not sure what one.i got it on a barter for tattoo time. when i do get it to start and run i can't get it to move it just surges and when i look in the engine at the glow plug there is fuel around the plug? i need some help on getting it to run.