I've been doing some research on quick hitches, and have a question that I can't seem to find an answer for. It's a known fact that the Cat 1 quick hitches require bushings be placed on the implement in order to make the diameter of the hitch pins larger. I've read that that is the ASAE standard. My question is, why did they design them this way? The hitch slots being slightly oversized would make sense if it was to allow clearance to connect/ disconnect from the implement, but by adding the bushings you take the space right back out of it.
Any ideas? I'm thinking about building a quick hitch, and I'm tempted to just cut the hooks to fit standard Cat 1 hitch pins.