Yeh simple physics, but it is one of those wierd things that doesn't act like it should. I had a Zona Zip frame, added a booster and the brake went to shit, no noise, bite or hold, I know the set up can effect these things, but I know how to set up maguras, as soon as I took it off the brake was better. However, my brother has a t-lite, the brake was OK, but when I added an RB booster, it became a lot better almost instantly. Both instances the brake was set up properly with the pads hitting the rim straight, decent grind, pads that were wearing straight etc.