I do know the hazards of the beads. I did tell the machine shop to mask off the iny and outy ports and they have done this work on bikes before. Thanks for the upbeat post
You still haven't answered my PM?
Sorry mate, I went for a ride on my K1 just after that last post so have only just read, and answered, your PM.
My "Upbeat" post wasn't meant to upset you, just to warn you Derek, don't just trust a bead blaster who's "done it all before", put that cylinder block in a big tub of hot soapy water and scrub the hell out of it, and you'll understand what I mean.
Up to you of course, but glass beads are measured in microns, so no amount of plugs alone will stop it's ingress. Cheers, Terry.