What issues are you having with the 32wcf? I've got an Uberti Sporting rifle in 32-20 that I've got working well with a few mods. Great caliber to shoot so I stuck with it and seemed to have ironed out any issues.
They seem to work well or very poorly. The biggest issues are the cartridge is to small in diameter for the carrier so it can sit at a diagonal in the carrier. Some rifles don't have enough bevel above the back of the carrier and the rim on a crossways round can hang up when the carrier starts to rise jamming the rifle. A more common problem is that when you are loading the rounds they have enough slop inside the carrier that the bullet can get wedged between the mag tube and the side of the receiver and prevent more rounds being loaded until you can straighten the offending round and get everything lined up so the next round will load. When you have eight or nine rounds loaded sometimes getting everything straightened out with all the spring pressure pushing on the rounds can be a real pain at the loading table.
Bonesteel. What I did one time as an experiment was to turn the bolt down to the proper diameter. This then required making a new guide for the bottom of the bolt and modifying the extractor. Next, I reamed the inside of the carrier to a uniform size and soldered in a brass sleeve. Then I machined the new sleeve to the proper size. Worked OK, but not worth the effort of doing another one since, as 44walker notes, with a few mods you can get them reasonably reliable.