We thought our pool was fiberglass and I bought a Pentair return jet fitting to replace an old, leaky one. Rather than try to finagle a way to remove the old, sealed jet, I opted to let sleeping dogs lie and drilled a new hole for the fitting. That is when I discovered the pool is actually made of foam and the wall was thicker. The new fitting would not protrude enough the secure on the outside with the nut, but it appeared it would work well otherwise. I just bought new Pentair long body return jet fittings from you yesterday. From the specs, I'm sure they'll fit through okay, but now I'm a little uncertain about the whole project. I don't anything about foam pools. Had never heard even heard of them before, and just want to be sure that using these new inlets won't cause some unforeseen issues. Many Thanks!