Ken,

I believe that the loose trim lever on the LS1-f is common to all -f's,
but some owners have been luckier than others in fixing it! Assuming
you have your glider certified as "Experimental," feel free to
experiment with different washer designs to try to add friction to the
lever, without locking it completely. Obviously, do not fly the glider
unless you are confident that the trim will be both adjustable and
snug. I would start by making sure that the trim is completely clean
of dirt, then try nylon washers sandwiched between standard washers.

As far as tape is concerned, I used Mylar Gap Seal (but I don't
remember which size, and I sold the glider a year ago). DO NOT FLY
WITHOUT GAP SEALS ON YOUR AILERONS! You will have very limited roll
control during the initial takeoff roll without gap seals! Tim up at
Wings&Wheels has a lot of experience with the LS1-f, and he can set you
up with the best tape.

And finally, always keep a new tailskid in your spare parts supply -
they are getting to be difficult to find! And on your pre-flight, keep
a close eye on the screws that hold the tailskid in place - don't let
the tail skid grind down to the screws, or your will have a very
difficult time removing the skid.

I hope this helps!
Chris "CF"