Hi, I am goin to do my first oil change in my 2009 SX-F 250 forks. This is my very first time with WP stuff. I was thinking while I am in there, is there something to do to make them better? I hear WP fork have a problem with mid-valve. Is there there anything to do? Also, what oil level would you recommend in outer chambers? I weight about 190-195 pounds so I am in a heavy side for stock springs, I think. Any recommendations are welcome.