I purchased an upright DiamondBack Fitness bike Model Apex U6, Item # 21753 on 12/28/10, brought it home, and assembled it that same night. I immediately discovered that none of the programs worked, as there was no resistance at all when pedaling. On 12/29/10 I called Sears and they said I had to call their support line. I did so and had to set up an appointment for a Rep to come out and repair it. The Rep came out on 1/4/11. He broke 2 of his tools just trying to remove the pedals to look inside, and had to leave without ever getting the base... read full review »