Just got a 1995 KTM 300 exc. Im 265lbs and in need of stiffer fork and shock springs. This bike has the Magnum 45 forks and Ohlins shock. The shock has sring part number 09-51. How can I get stiffer fork springs and something stiffer than the 09-51, perhaps the 09-55. I have looked and am unable to find anybody who can supply these parts?