[Elecraft] A couple more questions (toroids and soldering)

[Kenworthy, Edward (EDS)]

Ok getting close to toroid time - thing is until I read this list I wasn't
at all concerned, having wound some for the powermeter I built, but now...
:-) Anyway. Can anyone confirm that spacing and getting the wire through the
centre is the important bit, the windings being tight is mostly for neatness
? Also, I was considering holding the windings in place using a splodge of
glue from a glue gun - good idea or not ?

On a related note - crystal cans. I've had no problem soldering wire to
crystal cans, but as part of a process of continual improvement :-) I read
the tutorials and advice on the Elecraft web site. One piece of advice there
was to use some extra flux. Uhm, my copy of the K2 manual makes it quite
clear that using extra flux invaldiates your warranty ! Am I
misunderstanding something ?

Edward