On Fri, 30 Dec 2011 15:06:50 -0800 (PST), Gary
wrote:

Working on my ASW-20 today. Changing the contest numbers and N# which
are old vinyl markings. My guess is they were applied around 1995
when the fuselage was refinished.
A fingernail did not get an edge started so looking for the best way
to remove these with relative ease.

Thanks
Gary Adams GB

I have removed lots of vinyl lettering from vehicles.

Use a hair dryer to warm up the entire surface of the letter, grab a
corner and the whole thing should pull off. Don't overheat, you do
not want to damage the gelcoat.