I would love to get a rack to haul my Triumph Tiger (would be a solid 600lbs of weight between the bike and the rack). I have what appears to be the stock hitch for my Regal and it is welded to the frame. Any idea where I can find what the tongue weight is and what the tow rating is? If it is lower than 600lbs what are my options for getting a hitch that could handle that weight?