I think what is confusing me a little is that you call them "rolling bearings" Olaf?
Do you mean proper "roller bearings"?
My memory and the part diagrams are of hard rubber bushes at the rear shock mounts,
but I can't dismantle mine to take a look? (Well, not easily

) so i may be wrong.
Or is there a modification I do not know about to fits proper roller bearings instead?
Best from slightly-less-sunny London,
Ivor B.
(The BrownOverall)
PS - For information about a truly
remarkable vintage British motorcycle (the kind we USED to make) - see:
http://www.hurley-pugh.co.ukand enjoy....