PC7424? Hmm, not a computer. Must be ... oh, I get it -- a Porter Cable?
Oh, sure a Porter Cable. Did I use a Porter Cable?
Nope.
I used an EG24 -- elbow grease all day long.
I used a cotton-covered foam applicator for the SWM, then switched to the microfiber pad that comes with the Klasse Concourse kit for the AIO. Switched back to a cotton-covered pad for the SG. Use foam applicator for the Blitz and wiped it off with an all-cotton (Fieldcrest) terry towel. Did a bit of light buffing a few hours later with an all-cotton flannel cloth.
I like the tactile feedback of doing things by hand rather than by machine, where I don't have a feel for what is happening on the surface.
Hope that helps.