I bought Warp9... but bought them for the X, and omitted the ODO drive. Using the stock axle.
... the best axle spacers I've found, which made it easy were from RBRMX.COM
Make sure you call or email them, and he'll send you a set but be sure to specify
two of the brake rotor side spacers! That's the fix to your question.
I run them, front and rear. If you order them for the rear, tell'em they are for Warp9 wheels and he'll mill a tad (guessing at .09) of each side of the bearing lip. He's done it for me (if you mention my name, he'll remember "Johnny Jensen")
I threw out a set of ZipTy Racing after using these!
Front - rotor side;
RBRMX VS: ZipTy;
http://img.photobucket.com/albums/v298/ ... C05650.jpg
Here's the rears with his axle blocks;
http://img.photobucket.com/albums/v298/ ... 181680.jpg
http://img.photobucket.com/albums/v298/ ... 181667.jpg