I use Tufo Extreme rim tape when it can be found, probably like the 3M.
btw, KTM doesn't use 11mm hex heads any more, 8, 10, 13mm heads, 4,6,8mm threads just like the Jap bikes. Had nothing but Honda's Ktm's, Can-Am's and Husky's since '79. They're all pretty much the same to me for...