Mike (or anyone else): I'm getting my foot in the door of Mod-Foam-Carpet (I have the outdoor curse too) I got two sets of 37-40 shores with a package I just got...What spring combo would be a good starting point? I'm having trobule translating Jaco's color code into Shore #'s so I'd like a bit of imput from an experienced hand on what springs go with these tires, 40 wt oil on carpet...