this is probably a stupid question, but i will ask anyway. I have a kyosho gx12 which i am having problems starting, everything seems fine, fuel, red glow wire, primed etc, but it still wont start no matter how many times i yank the start cord. I have just noticed that i have 2 different lengths of glow plug attached to my service tool. can someone please tell me if using the shorter glow could cause the problem, and would it make any difference, or cause a problem using the longer plug. Failing this, any other suggestions.