I am working on my friends mag it has a xvalve with level 10. with the gold spring with it turned all the way up it shoots around 225 with the red spring the best I can get it to is 265 and it wont shoot with the silver spring. because I have never had a velocity problem with a mag this is a new problem for me does anyone have any other suggestions, the valve and all orings look to ge in great shape, almost like new.