The following issues can be related to an improperly adjusted gland nut:
Cannot adjust spray pattern (Loosen nut)
System continuously sprays solution (Loosen Nut)
Needle stuck and will not move (Loosen Nut)
Trigger stuck, no movement, or sticks (Loosen Nut)
Leakage from the Gland Nut (Tighten Nut Carefully)
When adjusting the Gland Nut, do so very carefully, in small 1/16 increments. Do not over tighten, as nut can be damaged or stripped.
Gland Nut Adjustment Sheet (Standard guns, pre 2015): CLICK HERE