Hi folks, first hottub ever, picked it up used. The guy was very helpful showed me all features and explained lots about it.

Got it home, went it in, it was great. Only problem was the main seat (has the most jets and turns on when pump #2 is activated) has very weak pressure coming out of it. The water is shooting out of the jets but at a very low pressure, and there is a large dial on the top/side of the tub nearest that seat that was explained to change the power of the jets. This dial is making a loud hissing noise, as if air pressure is being lost out of it. Also when I go to twist it, the dial is pressed upwards and pops off in my hand from the tub. It sets right back into position but there is clearly a problem.

Any suggestions? I am hoping it may be a bad seal for that dial but it may also be a leaking hose?