ive beaten on mine pretty hard, and all there is is a few top sheet chips... my only other comment is that the edges are realllly soft and got worn down after maybe 5 rails
http://cgi.ebay.com/Electric-EG-5-Plaid-Green-Chrome-Goggles-EG5-08s_W0QQitemZ200183373467QQihZ010QQcategoryZ21230QQcmdZViewItem#ebayphotohosting
thats them on ebay, but i just got mine for 45 new from jibij
well one thing for sure is that on saturday it got up to about 35 degrees and then, at night temps dropped like a bitch. so it could be some ice on the rails.