I've rebuilt the rear wheel of my '71 Daytona. It's not the original wheel, but was bought used, and there appeared to be some improvisations in the internal parts. It should all be factory spec now, but I find that when fitting it to the swing arm, I find that the space between he swing arms is about 5/16 inch greater than the distance between the axle nuts on either side ofthe wheel.
There were some spacer washers installed there when I removed the wheel, but no spacer washers show in any parts blowups I've seen.
Here's a pic:
http://bullfire.net/Triumph/SDC10034a.JPG
Any advice?