Here's one of the old threads. It's from WAY back in 2013, so some of the mechanisms may have changed, then again, Keystone is using the same wheels that were on 2009 models, so maybe things don't change with the times.
Anyway, here's one of the threads I referred to, complete with photos of crushed toys.
http://www.keystoneforums.com/forums...ad.php?t=11119