Is you tank full?
If it's adjustable, is it outputing at least 700psi?
If not adjustable, is it a high pressure or low pressure output?
How much did you turn up the velocity? Maybe you didn't set it high enough...
If you have LX, try a shorter bolt spring.
"There once was a buggy AI
Who decided her subject should die.
When the plot was uncovered,
The subjected discovered
That sadly the cake was a lie."