Calling FX experts,

I have recently bought the Dream Tact Compact and after a couple of weeks of shooting my my local club, the gun has settled down and I am averaging 10.9 ftlb. I would like to elevate this to mid 11 but how do I go about it?

I haven't done anything yet, but my guess is to remove the anti tamper rubber thing on the reg and unscrew the adjuster a fraction until I get my desired power. Is there any need to muck about with the hammer spring wheel? I have played around with it and I haven't noticed any difference at the moment.

Advice appreciated. Thanks.