I have the Tektro dual-pull brake levers, and the cable pull is not the correct ratio for either V-brakes on the top slot or canti's on the bottom slot. The V-brake setting is too small and the canti setting is too large. Thus V-brakes will seem to stop better with less effort, and canti's will feel hard but not stop worth a darn. At least that's what I found. You need to get 2:1 pull levers for the canti's and 4:1 pull levers for the v-brakes to make things equivalent. Or at least set up the straddle cable to be alot more horizontal on the canti's.