Aside from not staying set [assuming for about half {actually, I think less, but certainly noticable} of your crank stroke the magneto side is not turing while the impulse winds up and it releases quick and clean at TDC], if it's putting a good spark at TDC or just after, the mag is probably doing it's job.
Dry plugs, I don't think the problem was in giving it too much fuel. I wonder if it's getting fuel from the carburator. Maybe the choke isn't closing right, or float level is too low. Possible vacuum leak yet at the manifold, carb, or priming tubes, spraying a little ether around the suspect areas while it's running should show any of those except a priming tube leaking right at the head (doubtful).
Just to brainstorm, you are unscrewing [not just turning the lid] the cup to fill the priming tube, and screwing it snug again after priming.
A couple things to try that would at least indicate the carb not giving it gas while starting: put a tsp - Tbs of gas down each priming tube; screw it down, wait maybe 3,4,5 minutes and repeat [better yet, if you have an ether can that will shoot straight enough to get into the tube you can give it a shot of gas and a shot of ether and shouldn't need the wait time between], if that doesn't give a few pops, now spark seems the issue again. Really, with the amount of gas you had down the priming tubes, you should get a couple seconds running without even a carb mounted - I've done that before.
This post was edited by spiffy1 at 14:30:18 04/18/09.
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