I got my Hagon Nitros from this place in CT:
Dave Quinn Motorcycles They did ask about my weight, riding style (1 or 2-up), etc. It sounds like there were some issues before, as I was well warned by several people (including Stacka) to be sure I got the proper springs.
In the end run, I am happy with the shocks and have had no problem with them. I haven't had the need to change any of their settings either, although I try playing around with them.