01cr250 setup for trails?

Hey folks, I have an 01cr250 and plan to ride trails this year. The trails I ride are not your smoothest trails to ride, to go fast I need a suspension that can soak up alot without bouncing me all over the place. I would like to know what folks have done with this bike to really get the suspension plush, I'm not talking about just softening it for motorocross..I've gone that route with Pro action and I could tell a nice difference, but even with the clickers out I need more suspension. Any ideas/help, comments appreciated. I would specifically like to know if going to a "stiffer" spring would actually make the rear softer. Right now I have to add tons of preload to get the right race sag. My initial thoughts are that I should go to the next size up spring, but go lighter on the oil in the rear shock as well as the front forks. I weigh 175 lbs.
Thanks.

Jeremy,
Thanks for the response. Would it help if I sent you a picture of how far my preload is down on the threads and what my measurements for sag are? What would the advantages of the work MX-tech would do compared to what PA has already done? Thanks.