Little back story, bought a house that came with a pool. Pool was unused for 2 years have a swamp. TF-100 kit on the way, in the mean time I bought a new cart for my Hayward SwimPro Voyager. Opened the filter, installed cart, put it back together, turned the pump on, gage read 0 psi. Took it apart, bought a new gage, installed, reassembled, gage worked. PSI rose fast due to swamp/gunk etc, took opened filter again, cleaned cart and CANNOT get the plastic ring that connects the two half of the filter to screw on far enough to click into place. It gets about 6 inches from the tabs where it should click in and will NOT move any further. I have wrestled with it for over an hour and have twisted with every thing I have but will not budge. I even tried a hammer (no a good I idea probably). I can back it off no problem so it is not seized but cannot get it near the locking tabs. Any ideas?