Hi! I recently bought two different 40" macombers. A 4 harness (can handle 10) B5-C from 1980 and a B5 12 harness from roughly 1950. The younger loom is in better shape - would I be able to move harnesses 5-10 from the older loom to the younger B5-C, while I work on cleaning up and restoring the older loom? Does anyone know of anything that may have changed in those 30 years? Thanks for your help!