Some of my friends and I decided to attempt to set sag on my ZX today and it turns out I'm a bit heavy for the rear shock spring 226lbs 6'1". After turning the adjuster all the way down I was still setting in the 40-45mm range. Front came in ok although I'm sure real close to maxed preload. The bike rides immensely better but I'm trying to explore options on getting the rear closer to 30mm. Only option I have found so far is replacing the whole shock unit with an Ohlins but thats $$. I can't seem to find any manufactures that list a replacement spring for the 2013 ZX6R. Anyone have suggestions?