Just got a beta evo 2012 250 factory, how do i go about setting up the rear suspension. I'm roughly 15.5 st and when on the bike there isn't a lot of travel on the suspension .is there a required length that the spring should be at and is there standard setting for the damper screw . Mine is screwed out so it's springy all the time but unsure if this correct .It's working ok and not bottoming out but I don't know where to start with it .