Mine struggles to get to 2900 but hits 2600 pretty quick and then it slowly gets to 2900, I’m having a issue with the two set screws that are on the fill dial/knob, they are not holding on the brass screw and I need to keep tightening them up, think I need to go to the hardware store and see if they have set screws with a more defined point to seat into the brass screw. I thought they were tight but Friday I was having issues again. My tanks about a year old, I shoot with it tetherd on my Hatsans so I’m not opening and closing the valve a lot when out,I shoot from 4500 down to 2500 and then refill the tank when I get home, glad I have bigger tanks to use.
I might need to just get longer set screws and file the points myself to grip the screw better.