That looks awesome!!!
I agree that decreasing the damping and increasing the counter-balance would be a good idea. You just want the dampers to give it a hydraulic feel.
Too much resistance and after a couples hours of NOE flying in Yemen, your arm will want to fall off. Or, you'll end up with some mutant Popeye left arm, over time.
You also may want to consider removing the thumb hat mount. (It can't be that comfortable on the left palm.)
Pull the switch, stow the wires, cut/mill/grind the mount down, heat up some thin plastic and form a cover plate over the hole, then wrap the handle in a nice soft leather (i.e. tennis racket handle) tape.