In late June 2016, we called R&K Doors for a warranty issue on a $1K Milgard slider door that we had purchased. The bottom track of the door was defective and had deteriorated causing the door not to slide. We contacted R&K customer service to get a new/replacement track for the door. The customer service gentlemen we spoke to about the part was arrogant and rude stating that we could not purchase that part because they only work with builders now and we are a homeowner. Keep in mind, when we purchased the door, they did work with individual homeowners. When we called a second time, we were told that we could get the slider track but they would first have to send out a technician for a lead test on the paint of the house. We were not asking for installation; merely the part to fix the door ourselves and a lead test should not be necessary. In the end, we were told they could not help us get the part for the slider door. TIP - if you are not a home builder I doubt they will bother working with you. Be cautious.