After I rebuilt my W56, the shifting was notchier for awhile.
I think partly it was new synchros and partly shifting technique.....
By shifting technique I mean that as the transmission aged the shifter linkage gets sloppier and sloppier (the plastic cup it rests in) and you get sloppier and sloppier, but it shifts just fine. Replace the shifter cup and a rebuild, and you need to be more precise, but after years of sloppy shifting, you're not precise enough and the shifting is notching.
After awhile, the shifter gets a little less precise, you get more precise, and everything is fine again.
