
I personally have discovered that I over think in the diagnostics department.

THUS
Resolving starter issues is relatively straight forward

I start with a fully charged bike battery grounded and run power directly to the starter.

For me, 90% of my starting problems have been low voltage, worn, corroded, poor or loose connections at the battery or the starter.
I hope this is where your problems are - otherwise let the over thinking begin . . .
