Seems you have everyone baffled David.
i was lucky to not have to pull mine apart. For what its worth, those round bearings are beautifully well made (I have some of them). If they were in there and in reasonable condition, put em back in.
The tapered roller bearings should work if they have the right surface to run (ie the cone). Again if they came out of the Tx case and in reasonable condition put em back in.
Enjoying your thread so far... great job
By the way you did say "to the experts out there"......... Im no expert