My pool has the hot tub that overflows into the pool. When I turn the jandy valve to pull water only from hot tub no change is seen in pressure. However when I turn the other jandy valve to put all flow into the hot tub only, pressure spikes to high and i have to back it off to make it dump some into the pool. I have noticed that 3 of the 6 jets in the hot tub are not functioning. Could this be the cause? no loeaks or water loss is expierenced. Thanks in advance.