It's good to see another 68 K0 being recovered. I look forward to following your progress.
I picked up a classic "barn find" (well in this case in was a hanger find) earlier this year. It was basically given to me as "gas money" which was about $75 or so.
Initially I was going to do a ground up restoration but as I got into the project and started taking things off bit by bit for clean up I found that I enjoyed keeping the original patina of it intact, maybe just some basic cleaning.
Once I'm finished and ride it a bit I'll probably take it down and start all over again doing a more through "concourse" restoration.
I'm curious about the tank on your '68. I've never seen one with the middle stripe and the color that extends all the way to the welded seams at the fron of the tank. Do you know if this original? If so, could this have originally been a Canadian model? I don't think the US versions did not have the reflector on the front fender either...well, at least not in '68 or '69.