Jim,
Just to clarify - you use nylon and brass brushes on pines with bark like this?
My oldest pines are 50-60 years old. With a couple of these trees I sometimes apply a very light wrap of the finest wire to hold the bark plates in place and flat so they aren't shed by curling during winter wet & dry cycles.
I honestly can't imagine using a brush on these as I know what it does to juniper, where the effect is intended!
