Reliable,consistent power adjustment for the cricket?

O.K Fellows I have a tough one, as die-hard crazy as I am for the cricket .22, it does have a fairly major flaw that I really, really wish I could overcome, it is very difficult to adjust the power RELIABLY and CONSISTENTLY.

Sure you can spin the hammer-spring screw around, but can you get it back EXACTLY where you had it before?

I hunt in ways and places where it is very important to be able to go quickly and easilly from low to high power, but I just don't know how? 

is there a machinst that could rig something? Do you guys have a way to do it? I would greatly appreciate your input..... 
 
Hi John, The problem with AOA and every other HST device is they have a 'creeping' problem, they slowly rotate out, plus all the way in my gun shoots at 915 or so which is too hot and all the way out is around 400 which is practiclly worthless, and once you turn the Hammer spring you have to count the turns to get it back to where you were, 

I really envy FX power adjusters, or even the one on the new Hatsan Gladius Bullpup, It's absolutely brilliant.

But I am convinced one could be designed that would attach to the back of the cricket, a power wheel of some sort that could quickly and easilly move the hammer spring tensioner in and out.