I was doing some maintenance on the fleet and noticed that my 08 Switchback Dragon 700 136" has double ring pistons, while my 08 RMK 700 155" has the new style single ring pistons. Does the dragon maybe have an old carry over motor from 07? Also, the RMK runs noticebly stronger than the Dragon does, im am now thinking its the pistons that are making the difference. Anyone have any insight?