exapkib: what are your stock tires? What psi?
Don't know if this'll be helpful,but I did a tire swap on my Big Buzz after the alloy fork started to bother my carpel tunnel(I was using it as a nice weather commuter for a time). Stockers were Vittoria Randonneurs in 28mm @85psi. Swapped them for Randonneur Pros(folding bead,lighter weight) in 32 @75. Noticed enough of a difference that I was able to ride the bike daily without my CT kicking in.
__________________
C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Brompton S6L/S2E-X/M6L-X/S12 T Line