Paul from SWISCO responded:
February 19, 2016
Your top tilt latches might just be wearing out. Sometimes the ribs along the side that keep them in wear away, which would account for them being a little loose. I would also recommend removing one of your latches from the window to confirm that the 26-243 and 26-244 is a match. Traco has used both this kind and our thinner 26-390 and 26-391, which looks almost the same while installed.
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