Ron,
One tip that someone posted a couple of years ago helped me a lot. When applying micro, mix it dry (to save weight), but first wet the surface with epoxy using a squeegee to keep the layer thin. Spread the dry micro as best you can with the squeegee. Then use a 4-in. metal putty knife, but heat it with your heat gun until it's pretty hot. You will be surprised how nicely the micro can be spread this way. You can usually get 3 or 4 wipes with the putty knife before you have to wipe it off and heat it up again. When I was doing the undersides of my wings, I set up a couple of 100W bulbs to heat the putty knife while I was mixing the micro. Using this technique, you can eliminate a lot of the sanding.

By the way, I've been flying since last Feb. in primer. I've noticed that some of the areas I filled with micro have shrunk -- curing in the heat of the summer I guess. One reason to fly in primer for a while first before painting.

Mike Reinath
360 at 146 hours
N3602M