I know that the only dif between Mag's HS-11 and HS-33 is the piston size in the lever. Therefore, you can upgrade HS-11's simply by putting on a set of 33 levers. What about using a set of levers from their disc brakes? I've got a set of Louise levers and I'm thinking of hooking them up to the HS-11 rim calipers for trials. Think it will work? Anybody tried anything similar?