Currently running avid juicy 3's (185/160) on my scandal (formerly inbred) 29er.

I've acquired a second set of wheels to run with slicks for on road fun (the nevegals being not fun on the road).

Said wheels are centerlock, the original are 6 bolt. I've just tried swapping the front 185 disc for a 160 but the caliper catches on the spokes!

Just trying to figure out my options. The obvious thing to do would be get an avid centerlock rotor (for the new wheels) but they're £45! The other option is buying 2 two 180 rotors (one centerlock, one 6 bolt) and an adapter but that's probably gonna cost more.

Not happy, any suggestions?