At 00:12 30 April 2004, Matt wrote:
do they fall out of the sky when they get wet?

My best estimate (I flew them quite a lot in the late
70's/early 80's) was that in light rain best glide
went from near 1:40 to around 1:20, heavy rain or icing
could be worse. Difficult to be sure because some
(or nearly all) of the observed deterioration could
be sink. However, clean and dry they pretty much stayed
with the ASW 20, slightest hint of rain on the wings
and they dropped very rapidly away.