To winterize my filter I removed the Jacuzzi 7-way dial valve from the top of the valve body. It is held on by 6 screws and nuts, with a square o-ring in between. I reinstalled it today, and there is air sucking in at the o-ring seal. It worked fine last year. I'm just afraid to crank down too hard on those nuts. Is there a torque spec. on something like that or is just feel? I don't want to crack it. We bought a new diverter last year and I'm pretty sure it came with the o-ring. Couldn't just buy a spider gasket because the diverter and gasket is all one piece. The o-ring looks ok. How hard can I tighten it without worrying about cracking it? Am I supposed to really tighten it or should it work just being snugged down? Thanks. Ed.