There appears to be a lack of understanding here. The leather strap does NOT rest against any type of pin or rivet. While those holes are on certain footboard castings, they were never designed to use a pin for the 938 Tempo King pedal. I'm currently looking at two footboards in my Slingerland parts box right now. One pedal with the elongated fingers, each with a hole for a pin to pass through, and another footboard with no fingers or holes. Both are part number 803-10. The footboard with the holes was brought out for the Dynamo hi hat and had a pin going through it to hold the metal link to connect to the pull rod of the hi hat. This same footboard was also used on the 938 Tempo King, but without incorporating a pin. I hope this clears things up!
-Mark