Fafner bearing-mistery solved.
Spoke with JB Conversions today. They got right back to me. The bearing is a stock Fafner item, but has to be machined inside to make a slipfit as opposed to a press fit. I ordered two. One to replace the one I shipped to the OP and one for a spare. I suggest anyone who has this setup order a spare because you arnt going to find on on the trail, or anywhere near the trail. It is an uncommon beearing and needs to be machined to work.
Cost was $42.00 from JB.