I am having a problem with my spa jets. The pressure is weak, and I think that they probably need to be cleaned. I did scrub the cartridges in my filter, but that didn't fix the issue. I also noticed that the spa jet valve has very little resistance. It's hard to explain, but I don't feel pressure when I turn the valve. I usually have to apply a bit of force. It seems like the valve is turning freely. I will need a socket extension to reach the jets. Is a 24" long enough? Does anyone know if it's a 9/16" bolt? Is there anything else I should try? I haven't observed any other problems, so I can't think of anything else.