Here is the scenario, I have a 2013 yz250 that I purchased to build me a woods weapon. I weigh 195lbs in street clothes. Race tech Is calling for .47kg/mm for the front and 5.7 for the rear. I have the stock springs from my 2010 yz450 and I was going to swap springs and re valve but the fork springs from the 450 are approximately 14mm longer than the 250 springs. Is there an easy method to use these 450 springs or am I better off buying new?