Had a friend run a high pinion and it kept frying the bearings so any extra clearance I would gain would keep me in fear of failure all the time.
Any recollection as to which bearings failed specifically? (side or pinion bearings) The outer pinion bearing is dependent on having a special oil retainer ring that is installed behind the bearing race in the housing. If that's missing it will starve that outer pinion bearing for oil. Just curious. Carry on.