I rode my CAAD9 for 1500 miles before getting a professional Retul fit. I thought I had it dialed in after that many miles.

The Retul fit was the best $200 I spent on my bike. My seat was raised 3 cm (YEP!), my cleats were moved on my shoes, two shims were put into my left shoe which completely got rid of the lingering knee pain I had on rides, my bars were lowered giving me a more aero position and my power and comfort went through the roof.

I'd do it again in a heartbeat.