In the process of doing filter changes on an '03 225hp HPDI. I am going to change my gas lines, but local yamaha dealer does not sell the primer bulb by itself. He said it only comes with the gas line attached. At 147 bucks, I think I can do better than that! Is there a place where I can buy a Yamaha primer bulb or would a Merc one work ok? I really don't want a wally world cheap pos