I couldn't find much info on this. I bought a used, 2007 Prowler 650. The seats come off easily when you lift the lever under the seats - I assume that is normal. However, it seems like they only have one firm attachment point. It's the 'nub' in the front of the seat that the lever releases. The rear portion of the seats seem to have these ears that just slide into the notches in the plastic receiver. While it kinda holds the back of the seat in place, I am not understanding how this configuration is very safe. Am I missing something?