I've got 2 CPO's from MM and they are both attached to freshly painted metal CPs, and they stick like a dream. They stick so well in fact that you have to be very, very accurate when you decide to stick 'em down - you will not be able to adjust them.
My only problem (and it was likely my problem and not to be blamed elsewhere) is that when I cranked down on the carrage bolts for the sticks, the overlay squished out a little bit and when it bubbles, it turns white. No big deal for me.
-jeff!