sure you can on mine anyway. i have the double rubbers to allow spring in or out op. but since asymm, i run mine mirrored. flats on same side. wait i'm thinking i can flip the drive pulley too. i'll have to check that out. ps, i went to pull the driven's fixed sheave off of the jackshaft, using a ratchet, i warped the crap out of the 2 and a half sheave. can you say bannana? it is back in shape with a little help