John arrived on time...that's a good thing. John pulled out the dryer and immediately said the factory clamps on the dryer vent tubing were not good. He replaced them with the screw tightening washer clamps. Then came an upcharge I was not aware of...that's a bad thing. I asked if he could swap the dryer / washer as one when door opens, it blocks the other. He did that even replacing the dryer pigtail without a charge...that's a good thing. He left both machines un-level even after asking me for a level...that's a bad thing. With machines on pedestals, they must be level and not rock to use them ... we had to level them ourselves after he left. We also had to vacuum the floor as he did not clean up all the lint...that's a bad thing. He advertises he accepts credit cards but wanted a check or cash. When pressed by my wife, he accepted a credit card. John's personality can be overbearing...that might be good for some but not for us. Hate to ruin a streak of 5 star ratings but must call things as I see them. What I cannot see is how well the dryer vent itself is cleaned.