Just got rid of my Speet twin cables as gone back to using the balance beam as intended as Vincent also said it was better when riding Eric's Comet that had been modified by a Swede at the French rally three years ago but it was on a Comet and original braking distances were better on the Comets as being of lighter to start with.
By the time one has unscrewed the lower cable adjusters I can remove and replace the standard set up two-three times. OK, I'm older and can't squat like I use to.
This is on the round the world "A" with a 21"x 90/90 AvonTrailrider on a WM4 rim (2.5") I can run 18 to 22 psi and gives a better ride with more give.
Notice anchor pin is an Alan bolt M10mm with a S/S sleave on it, the reason being down at Bluff (NZ) lost pin on the LH side, but because of the TLS cam boss didn't cause any problem as it anchored the brake plate still. Again all these foreign manufactures use metric and am continually converting them to a British standard so don't have to carry extra tools.
Also left Vincent's standard set up for when I move it on as want to fit a rim disc some time.