I replied to you a couple of days ago, I am the one with the 2003 Coachmen. Right now I can't get you the manufacturer of my slide because it is up north and I will not be there until this weekend. But when I first started having this problem, I called them and they told me it was not a big deal. Since then they had a design change and replaced a rolled steel pin with a split pin. I tried that and didn't have any luck. The best luck I had is with the 3/16 dia. steel pins I made myself. Haven't broken one in over a year. Don't use a dowel pin, they are hardened and may cause damage before they break.
If you have any questions, please e-mail me at blkoboldt@yahoo.com.