We own a 2013 20SLM. A few months ago I found that one on the plastic hooks/clips that holds the seat upholstry to the frame had broken. The dealer was good about getting us a replacement seat under warranty - just picked up the replacement seat and when I removed the plastic found two of the clips on it broken (in the same area at the corner). Looks like the seat cover is installed a little off-center - when the final clips are pulled in place there's too much stress on the plastic and it fractures. Any one else experienced this problem? If so, is Bennington looking at remedies (maybe a heavier clip, different material, etc.).