losing our mind. We have sterling shower kit, 36x34 base is in place. Trying to attach 36 back wall. The knotches at the bottom will not click in place. We can get one side but not the other. The framing is a tight fit, but even still we can get the knotches lined up and click, they rock on the back edge of the base. I think the knotches are not Matching up. I think they are off from the base to the back wall and don’t match which would be just our luck. My husband is currently trying to take down framing because he thinks it is not letting us pivot the back wall into place. I thought these kits were supposed to be easier. Not two days to just put in the back wall.