Bucktruck, My plan is to locate two good used axles. During my career, I was a machinist for 27 years and sleeved many a bearing surface. The issue as Jerry pointed out is what material to use and how hard the finished sleeve is. Too hard or too soft and the bearings or axle will either wear out quickly of worse yet destroy both the axle and the housing. Unfortunately, since I retired, I no longer have access to all of the machines, heat treating equipment, engineers and metallurgists that I once had to properly accomplish this task.
If I can’t get serviceable axles, I may have to down that road.
Dusty, can you elaborate a little more on the identification (manufacturer) of that sleeve? If that sleeve is still available, it would solve all of my metallurgy concerns.