Howdy, Ralph.
Y'know, I was cleanin' house a while back, and I just
loved my
409 All-Purpose Household Cleaner, 'cause of the way it cut through... why,
grease!
Sure enough, ever since I had that epiphany, I've been using it to remove mold release residue to highly satisfactory effect. I'll spray it on a body shell, rub it in with my fingertips till the plastic starts to squeak, then rinse it off under cool tap water. The soft toothbrush comes in handy with smaller parts still on the trees.
Because the water out here is so hard, I've found the trace lint from a paper towel-drying to be an evil lesser than the mineral deposits left behind by air-drying.
There's my

...