[spaghetti]

No worry: you actually can reduce power while loading and then switch it back to full power to shoot.
I also have the impression that your gun might have been over-pumped. This also makes loading very hard: more air in the reservoir, more effort to push the shaft into it.
It's not necessarry to pump it to death: you could keep it loaded at just 20 or 25 atm, and it will shoot powerfully as well. But with less air in, it will be easier to load, and the trigger action will be softer too (so gaining some accuracy, BTW).
Hope this helps, enjoy.