Hi. Im new to the the forum and just learning the ropes. I am a new owner of a 91 kawasaki 440 jet ski. I have 100 psi in the holes I am told I am to have 150 psi. The jetski runs untill it hits the water, and then it dies after a minute of running time with no power. The carbs are set at 1 and 1/2 turns on both lean and top end adjustments. Im not sure really whats going on, I didnt expect 100 psi to be a problem but Im new to 2 strokes so any help would be greatly appreciated.