I fortunately have not had to deal with worn out nonskid but here's an article from SailNet on Treadmaster:
http://www.sailnet.com/collections/articles/index.cfm?articleid=suelar0190

Here's another on restoring nonskid: http://www.sailnet.com/collections/articles/index.cfm?articleid=caseyd006
Good Luck



[This message has been edited by Alan Grim (edited 04-24-2001).]