Fitness assembly is a bit confusing because most people offer repair only on their websites. I contacted One Day Fitness Repair and the man answered right away. I told him I needed a brand new treadmill put together.
He was able to come the same day, gave me a time frame of 2pm to 4 pm and was actually here at 1:45. It took him from start (opening the box and removing equipment) to finish, 45 minutes.
He was nice, professional, and told me I had the wrong outlet in my wall. It was helpful since we would have never known why it was tripping.
Also, this is the best price I could find. He charged a third of what his competitors did. I'm so glad I found this company.