I have a year 2008 - 208 Adventurer..... under the seats there was a hard white plastic piece that helped the seats slide on their track system. Over time the plastic part disintegrated and fell apart. It's a little tough to describe but would think others with these seats and an older boat may have had to replace them as well. Anyone else by chance have a pic or chased down this part before? Without them the seat is wobbly and doesn't slide as it should. Any help would be greatly appreciated.