I am in Denver. We have an old and very heavy sliding door that got jammed. I talked to several different companies, and I could tell these people were the most knowledgeable, and because of that I was willing to wait two weeks until they could fit me into their schedule. Brian and his helper arrived right on time, went right to work, knew exactly what they were doing, and were very professional. The job even came in under the estimated cost, which is always a good thing. They were worth waiting for and the sliding door has never been opened so smoothly and quietly. Thanks so much. Susan A.