Thanks for the feedback. Not sure I can explain it any differently other than to say with the spa empty, when I return through the jets only, the water sprays about half way across the spa. When I turn on the blower, the water sprays almost completely horizontally across the spa with hardly any drop until it hits the wall opposite the jet. I understand that the blower is not increasing the static pressure of the water however it sure seems to be increasing the velocity pressure and therefore the total pressure of the flow is incrementally increased as well. I don't really know why but that's what's happening. If you put your hand in front of the jet without the blower on, it feels about like a garden hose with no nozzle on it. When you turn the blower on, the water jet feels like it wants to drill a hole in your hand.
I am getting zero air out of the jets with the blower and blower check valve removed from the riser tube. The riser tube for the blower is 2". I am not certain what happens to the air line once the it heads underground. The equipment pad is 23' from the spa. Filter is clean. In both pool and spa mode, all water goes through both the filter and the heater before heading to the spa or pool.
I only have one pump. Flows the pool and a few small water features normally and changes to 100% spa when put into spa mode. 2 separate drains in spa and 2" piping start to finish. Pump suction strainer basket is clean.
I'm going to order the 1/4" jets tonight and see how that works.