I like the thought of the Motion Pro rim locks to reduce the need for balancing tires. I see they come in 3 different sizes, what size are you using in the KTM? I believe my 350exc wheels are the same as the 500.
12 KTM 350 EXC-F
09 KLR 650
12 Genuine Stella w/Cozy Sidecar
05 Yamaha XT225
03 Honda Goldwing GL1800