I looked at a WR while at the shop Saturday. I see the problem. The slotting should work. I don't know if there's enough room for a valve stem cap or not. A dab of fingernail polish or a dab of silicone seal would work to keep from having the sawn slot rusting. It's an esthetics thing, not really functional.
Ever get lost? You know, that good kind of lost - come to a dirt road intersection and you have no idea where you are or which way to turn? I like when that happens!
Mark - klx678
95 KLX650C w/Vulcan piston bigbore, Now an 09 KLX250S, selling my 90 Zephyr 550