It's been awhile since anyone looked at this, I came across it looking for some info on my imperial, but if your still there outdoor king stock a universal electronic ignition module. I have used these on a Stihl and a Briggs. No idea how they work but made both motors start and run possibly better then new.
Good luck with it.

If I can get a large enough hammer it will run for awhile just trying to get away from me