Your response hit the nail on the head. That is exactly the education that I needed to gain access to the parts to replace.
Do you have any suggestions on how to fix the windows so they close all the way. I am not sure why but the window when closed do not align. The bottom sash is usually a little higher than the top sash so the lock cannot close properly. Is there an adjustment that I can make at the top to allow for more room for the window to travel up so they will become aligned?
Hmm. I'm not sure. Maybe there's dirt in the interlocks. That's the space where the top and bottom sash come together. Check for dirt that could be messing up how your window operates.
It might also be the balances. It's possible that one of them is bad, which is causing the window to come out of alignment. Check to see what condition they're in. Have you replaced either recently?