The start technique that always worked well for me was...
- Mixture full rich
- Throttle off (full out)
- Boost pump on
- Throttle full in, count 4 - 6 seconds, retard throttle approximately to 1000 rpm position
- Crank engine
Never had a problem starting up this way.
Hot starts on the I0-360A1A became a non event once I learned to shut down with mixture only (master and mags off of course) and leaving throttle in the idle position.
For start up, mixture remains off and don't touch the throttle. Start cranking, when engine starts firing, advance mixture to full rich. I always taxied absolute maximum lean, requiring a little richening for enough power to taxi and never had fouled plugs. Hope my suggestions helps someone out. Cheers!