The technician, Norm, called and said he was on th...

The technician, Norm, called and said he was on the way. He did arrive within the time window that was provided. Norm did an outstanding job in the fixing of the noted problems, and suggested ways for preventative measures to keep the windows working properly. He also showed me the way to take out the sliding window that I have been having difficulty with.
Well worth the the money spent on the service call.