That is true, AoA advises against changing Reg pressure. But, on my .22 with just the power wheel, I can go from 880 FPS with 18.1 grain JSB to over 1000 FPS with the 25.4 grain RD Monster. Honestly, no reason to change reg pressure... However, it is externally adjustable should you go that way... I don’t know about 80 FPE, but I do know it will easily go to over 65 FPE with the reg set to 130 bar, which is my factory setting. 80 FPE would not be unreasonable with increased reg pressure IMHO.