I have an odd ball 3 speed with od out of an 86 swb c10. It's an np 883. Came factory with the Hurst shifter. It needs a rebuild new synchros and bearings. The pilot part of the input shaft is worn from riding in the bushing. What's the fix for this? New input shafts seem hard to come by and rest of the shaft seems ok. Is there any sleeves or anything maybe?