That's my problem, I've been looking for videos on this gun to show you how to do all that. I can't find anything! My impact was easier to tune in this thing is!The stock hammer will not open the valve adequately at 150bar. If you reduce the reg to 130, you will find that the speed increases to around 870-920 on level 7, depending on the hammer screw setting, as mentioned above.
Please note that you should not reduce reg pressure when the gun is pressurized. Please find a video explains how to change reg pressure!
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