Sorry, not to hijack this thread, but this question may be appropriate given the title.
Do stock shocks seem to have to have the preload adjuster really tight or far down? The reason I ask is because the KX500 that I bought a few months ago has Eibach springs in it that are spec'd for a 240 pound rider. I even called the shop that put them in for the guy, and they remembered he was a larger fellow.
I weight 190 without gear, but for me to get 4 inches of race sag the preload adjuster for the shock is about 85% of the way down. I have less shock to work with.
It just seems odd that I have a spring that is for a heavier rider, but I have to have the preload adjuster really tight for it to get the right amount of sag.
My engine getting rebuilt, and once the engine is back in I'll check the static sag to see where it is. Once I check the static sag I'll know for sure, but I can't imagine that I'd need a spring stiffer than a 5.8kg/mm spring, which is for riders 220lb+ on most sites that I've researched.