A friend's house (about 50 years old) has what I believe are original Pella windows that need a bit of sash work. The balance mechanisms are aluminum or zinc and have a round hump profile - flat on both sides and bulging out in the center. The sashes ride up and down on these "humps" running in a channel or groove in both sides of the window. If I remove the sash stops from the inside will the balances come out of the jam with the sash?
Does anyone know where I can view a picture of exactly how the balance connects to the sash, and what type of balance it is?
I need to remove 8 lower sashes to correct the hieght of the sash to compensate for a botched job of cladding the outer framing and sill so the windows can be latched. The cladding was done by a contractor several years ago. They were looking at getting the windows replaced and asked my opinion - I looked at them and the sash etc is all in good shape, just cannot go down far enough for the sash latches to engage so I need to either cut down the top or the bottom of the window so the sash-latches will line up again (roughly 1/4")