It appears I need to shorten my driveshaft on my 420SEL. I've had them done on American cars before with no problems, just weld the yoke back on. The Mercedes shaft looks different, doesn't appear to be welded. Is it pressed on?Can these be cut off at the yoke and welded back, or is there a different method needed? Is it better to cut the spline end when shortening? At least that way if the weld failed, it would not tear up as much as the other end.