IIRC, note not all Duos have the same setup as SH have
tried to improve it a few times now...

On Wednesday, January 11, 2012 11:10:10 AM UTC-5, Morgan wrote:
The caliper is mounted near vertical. I may pull it just to orient it
better and eliminate that variable.

Right, its still got a cavity trapping air in the mounted position.

Be careful with the adjustments.
Things I have seen, which you REALLY want to avoid:

(1) adjustment so that vent in top of master is blocked;
this is supposed to be a normally open system.

(2) adjustment so that the spoiler travel is restricted;
check that the spoilers can come full out (cases some
complaints about Duo spoilers !)

Hoe that helps,
Best Regards, Dave "YO electric"