I apply Zaino Z2 and Z5 LSP using an 7.5" LC Constant Pressure pad (from
www.properautocare.com). I've used the black and the red pads, but I prefer the red. Now I have 2 red pads (one for Z2 and one for Z5).
I find that I can lay down a thin, even coat using my PC and a red pad set at about 3.5 to 4.0.
Regards,
Dan.