private wrote:

Is it common to be able to remove paint or dope in
this manner?

The Randolph paint rep to whom I spoke said that it is not unusual for an enamel
top-coat to peel off of dope this way; in fact, he said I might try using a
pressure washer on my Maule to see if I could avoid sanding the enamel off. I've
never seen dope top-coats separate from dope undercoats, but perhaps it's
possible if the undercoat was not prepared properly. I do not know how well
polyurethane bonds to dope.

George Patterson
Give a person a fish and you feed him for a day; teach a person to
use the Internet and he won't bother you for weeks.