I installed a sand point last year and ran irrigation for my lawn and there wasn't any issues last year. I was getting around 9 - 10 GPM. This year however my pump pressure drops to 15 to 20 while running the irrigation which affects the sprinkler heads from covering the area. I haven't looked at the water level yet but do you think it could be the sand point has restricted flow or is dirty? Would that affect the pressure to drop if it wasn't pulling enough water fast enough? Would putting a smaller nozzle on the sprinkler head increase the pressure so the area is covered completely?