I purchased a 2005 CRF450 used in the fall. The suspension (valving and springs) was set up for a 150 lb "B" rider by Factory Connection. I am a 200 lb "B" rider. Can I get away with just changing the springs or would the valving need to be changed too? I keep going back and forth between- A. Sending it back to them and paying around $600 to have it set up for me B. Putting the stock rear spring in and .49's in the front. (That is what I hear everyone is doing) C. Putting the stock springs in and going from there. Any opinions?