Adam, we use SOREX, Luke loves them, TrackSideRC sells them, they're not cheap but they do work. Best ask Tim, Anthony or Jeff as to best compound to use.. we use 36's (I think they are med/hard). Also found that best not use GRAB type lock nuts, use the Nylon locking type as the GRAB type cracked our EP rims. Im sure Luke would lend you a set for a few laps to see how they perform. Are you going to be there Friday night?

Take up the offer to try luke's earlier on Friday and then run accross if you feel they were good, or want something softer etc, No use wasting $$ without trying them out. Luke's using NiMH batteries too, heavier, so harder compound might be a better choice. unsure.

PS: Ill make sure we have some glue on hand as you might need to make them up. Thanks for lending us the wheel nut that day:)