Hi Grumpy, have done the test, built an in-line tester as i said i would, not pretty but works. Made the tester so i can open the spark set from approx 1mm to 20mm, after that the spark has to jump to far and motor will stop. While doing the test i had a constant strong spark, there was no missing at all. Did not stop it from surging/hunting though, but as with the Millers Falls motor was able to close choke up a bit of the way and smooth it out.I guess this means there is nothing wrong with the ignition module.
