I had heatsink snowy's before this and kicking up onto my rear I would have instant bite and then slip and constantly fall on my ass. This is on a trialtech rim rough grind.
I am 6'4 and ~105-110KG's which may have been the problem. Changed pads to TNN LGM pads and have never looked back! Have never slipped once and has strong bite every single time! I honestly dunno what you poms are doing wrong, but fix it because these pads are the shit!
Havent tried the KB's, but if they are even half as good as the LGM's, then they will shit all over heatsinks.