I lost my '92 Schwinn Crosscut binder bolt years ago, when I took the saddle out for transport and the binder bolt subsequently vibrated off during the trip. The replacements I've tried have all been mediocre, at best. The last one (pictured) required a ton of snugging to keep my seat post secured in the seat tube.

Any suggestions for an efficient quick release binder bolt are appreciated.
Or...am I relegated to using a hex head non-quick release style?

Thanks!