You have an early model ’57 Sportwin as the floating pin was only used on motors up to #11000 and motors #11001 and up used a screw in pivot pin with a sealing washer on it. Since it supports the shift cradle, I’m sure it is made of hardened steel so a soft screw wouldn’t hold up. If you can’t find the proper pin, how about cutting the shank off a drill bit of the proper size? Drill bits are hard.
Besides the pivot pin, the prop shaft seals were also changed mid year on these motors but I think it was at a higher number. I would have to check on that.
