Our pool builder went bankrupt before crossing the finish line with our pool. I'm piecing the rest together. We have Hayward Jet Air III SP1434PAKB jets in baggies. I need to install them and am wondering what I need between the hole in the spa and the jet. I found the Owner's Manual for these jets but want to make sure that the "seat" is all I need. And any instructions on installing the components would be appreciated. We've paid in full for the pool installation and were at about 85-90% complete so we have become DIY pool builders.