Just bought a Specialized Hardrock Pro Disc. I have a question concerning the fork. I know it's not the greatest fork but I just want to squeeze as much performance as I can out of it. My question is how do I control the dampening on this fork? I was told to increase the air pressure up to 50 psi (I weigh 205). The LBS said to increase in 5 pound increments. Also, adjusting the knobs on top affect the performance in what way? Sorry, don't know the terms to describe the problem more accurately. Thanks for the responses!