Thanks so much for your information and advice - very helpful. I will most likely go the BAS route. I have seen Robert McCubbin's work on the XF Facebook group sites, but didn't realize he also travels to California. I will check with one of the local shops here to see what they say and decide based on that. Window seems to be separating more and more each day even as it just sits in the garage. I have a towel wadded up under it just in case it lets go. Thanks again!