Oh and I completely forgot to thank Bob / Charlie da Tuna: the trigger is awsome and the tuning guide which can be downloaded from
http://www.charliedatuna.com was
a great help.
The only thing different was the 12 fpe factory spring: close to NO preload.
After flattening the ends of the Quest spring and polishing them I preloaded the spring like this:
Tophat / o-ring od washer / washers / spring / washers / piece of the "plastic spring guide" / o-ring od spring guide / the actual spring guide.
NO twang whatsoever.
Before the o-rings were fitted there
was twang.
Have never read about using o-rings in the spring assembly, just tried it out of curiousity.
Maybe a springer expert can approve or disaprove, I'm not sure.