Teh 62 D300 with poly runs great but in the last few days when you drive somewhere get out to run in the store quickly, come back out, it wont start for 10 or fifteen minutes? coil not gettting hot, ballast resistor not gettting hot. dont think I have any vapor lock in this weather? but the flange gasket on passenger exhaust manifold is leaking towards the fuel line. any ideas? it kinda seems like vapor lock. did not have tools handy or time to messaround iwth the last fewdays. have not checked spark or anything when this has happened.