Hi gizmo, yes mate, see the thread here...scroll back to the beginning of the thread. wink HERE
In the meantime, contact your local Bowls Club, speak to the greenskeeper and find out the name of the engineer who sharpens their reels.... wink

Take the whole unit to him and get him to disassemble, check (and replace if necessary) the reel bearings, spin grind the reel, surface grind the knife-blade (and/or replace if necessary), re-assemble and adjust ready to replace in the machine. wink
The engineer will be able to remove and replace the rivets if necessary. smile
cheers2

Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin