Modular Synth Panels

Hi All,
 
New to this group, live in Holland and working on MOTM/Oakley/CGS
system.
 
Got a CGS Steiner VCF PCB coming my way and got two questions (cross
posting to CGS group):
 
1. What are my best options for mounting it on a Schaeffer panel, I
figure there's more than one way (Stooge bracks/pot bracks?) can someone
maybe make a breakdown of the best/less good/worst options?
 
2. Concerning the gain stage, is it advisable to ad an overall gain pot
or will a resistor/link do? I like tsomneevich design in the CGS files
folder, would this be a matter of adding an extra hole, under the hp in
for example?
 
Krimo