What is the difference between the .22 and .25 aircuda max besides pellets? Are the valves, transfer port etc different size? I'd like to shoot 25.4 gr .22 pellets at around 860 fps currently they shoot 100 fps slower. I've increased the reg to 2200 and the hammer spring all the way in. If I increase the reg pressure passed this I start losing power. I don't want to void the warranty either so I'm at a conundrum. I also don't want to move up to a .25 caliber either.