We installed a new pump and filter. This required re-plumbing as well. The pump is no longer putting out enough pressure to move water up the slide line. Previously, my Hayward one and a half horsepower pump put out plenty of pressure for the slide.
Photos attached. The green line is the slide line.

I will also attach the old plumbing set up with the old pump.

The hose is not blocked or, I presume, leaking. I tested this by connecting a garden hose to the slide line (at the pump) and that put out plenty of pressure on the slide. I also tested by increasing the pump speed and partially closing the returns. However, I had to crank it up to about 3300 and fully close at least one jet, which triggered a pressure warning on the pump. This did improve the pressure to the slide, but not significantly.
Could this be re-plumbed to allow for more pressure to go to the slide? Or are there any other creative ideas out there? Do I need to Jerry rig something else?
Thanks!
Photos attached. The green line is the slide line.

I will also attach the old plumbing set up with the old pump.

The hose is not blocked or, I presume, leaking. I tested this by connecting a garden hose to the slide line (at the pump) and that put out plenty of pressure on the slide. I also tested by increasing the pump speed and partially closing the returns. However, I had to crank it up to about 3300 and fully close at least one jet, which triggered a pressure warning on the pump. This did improve the pressure to the slide, but not significantly.
Could this be re-plumbed to allow for more pressure to go to the slide? Or are there any other creative ideas out there? Do I need to Jerry rig something else?
Thanks!