On Sat, 29 Mar 2008 19:44:45 -0700 (PDT), Frank
wrote:

Hmm thanks for the tip about the 'L' setting: I have started using L
for thermalling in strong thermals, in the belief that it allows me to
core better, and to use no more than +2 for landings. If the mylar
seal is being overstressed any time the flaps are in 'L', I may want
to reconsider its use at all.

Don't worry about overstressing the mylar tape - this is not going to
happen. Mylar tape even survives on ASW-20s with its 55-degree
setting...
Bye
Andreas