Hello i converted my Impact MK II .357 to a .22 800mm tension barrel set up. Gun was working great for about the first 30 shots now the valve gets stuck open leaking air out the back and i have to cock and fire to get valve to shut. Anyone else have this issue or know what i need to do to fix? I'm running the regulator at a 100 bar and spring tension on max and out to the 4th line on valve ajustment.
