Tried repositining the brake arm redbound spring to the highest one? This should give you plenty of tension for instant pull back.
The spring tension is fine in the middle one. It's the amount of cable pull that determines whether it's v or mini-v suitable. With normal v's the brakes are spongy, but with a double-lever I don't find it a problem.
The spring tension is fine in the middle one. It's the amount of cable pull that determines whether it's v or mini-v suitable. With normal v's the brakes are spongy, but with a double-lever I don't find it a problem.