Hi John,
I just cut an access panel in my slide, it is a steel frame with approximately 5/8 inch plywood on top, filled with a white foam type substance, and the bottom side is fiberglass. My rig is a 2006 however it’s probably about the same. I set my Skil saw for approximately three-quarter inch and cut a nice square through it to access the slide electric motor and gear box to replace a roll pin.
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