I never did find the sweet spot on the stock shocks, no matter what combination of preload/damper adjustment that I tried. I than tried the Progressive 412 11.5" shocks and found them to be better, but still couldn't find the sweet spot. I know have the Progressive 440's 12" and found the sweet spot! IMO these shocks fit the Vmax very well. Easy to adjust, no tools needed. Unfortunately, they are not cheap unless you get lucky and find a great deal, like some of us members, but either way, definitely worth the money.
Mike