Front engine mount boo boo

I added a 1/16″ thick head shim to make the 82001 engine easier to start. When I test fit the engine one of the front engine mounts no longer lined up. The engine bracket looks like a MK2 with vertical slots for the bolts. The frame also has vertical slots instead of horizontal slots like later MK2 through MK 7 bikes. A 1/4″ drill bit fixed the issue.