I've been looking for two replacement locks for a Crestline window sash. The window was purchased from Menard's in 1993. I contacted Crestline about where to find the replacement locks and they gave me the name of two possibilites, neither of which have been able to provide the locks. In the meantime I discovered that Crestline customer support is also Menard's customer support. It's possible that Menard's owns Crestline. After I mentioned that the windows were purchased from Menard's they were more helpful. I sent them photos of the existing locks so they could see what I have. They sent two locks for me to try with an alternate set I could order if the first set didn't work. Neither set works.
I know the design of the locks changed because I successfully replaced a set on a different window several years ago but the current design doesn't work at all.
Does anyone know of sources for window parts or how I might be able to resolve this?