Brian,

I have the same ritual. Painted bumpers do have their disadvantages...

I use much the same process as you. To mix the paint I use an awl, idea came from someone here on the forum. Dip it in the paint and count the drops into a bottle top, wipe it off then dip it in the hardener, I use a 2-1 paint to hardner mix. Then I use a torn off paper match as an applicator. I just touch the chip and let the paint flow into it. If I get it right, it leaves a little "blob" above the surface. I'll let it dry a couple days then I use this stuff: http://www.langka.com/ to finish it and if needed a fine polish then wax. there have been time when I have used 1000 and 2000 grit for a larger area.

Pat