Originally Posted by
grumpus
Remove the Oryx arms, grease the spindles and replace. Move the thick brake shoe spacers to the inside of the arms. Ensure the straddle wire is low enough. Enjoy your improved brakes.
Exactly. I don't think there are a lot of truly bad cantis, but there are a ton of bad canti set ups. The pads should contact the rims when the canti arms are at top of their arc.
And I would add: Replace the Tektro pads with good ones. The Tektro cantis I put on my wife's bike were about as grabby as nylon.