Hi Big_Ed:
Wind Surf Dog is correct, the Piper Glen has rotating jets. The "trim" ring of the jet -- the stainless steel ring around it -- rotates. It's easier to move it when the jets are NOT running. Some rotate clockwise to open, others rotate counterclockwise.
Also, check both your diverters and, if the new Piper Glens have them, air injector valves. They should be on "max."
I have a 1999 model of the Piper Glen, so things may have changed. Please respond back if you need more help.
Good luck!
Drewski