EH29c Ignitor Issues

[Reps Repair]

My first extensive cart repair, intermittent ignition? (will run for 5 feet or 5 minutes) Replaced ignition coil-same,
replaced ignitor-no spark, replaced pulser-no spark.
Put the original ignitor back in and again had intermittent ignition, bought another ignitor, no spark, again went back to original ignitor and again have intermittent spark????

Did I get 2 NEW Ignitors that are BAD?

I see they range from 80$-580$ , I paid 80$ and 135$, is that my problem?

I wish there was a way to put a magneto on this thing.

Rep