Wahoo!
I fixed it, it's stopped leaking!
I replaced and re-set the brass float and then leveled out the joint between the top and center section. A friend looked at the carb and realized the top and center portion did not match, the upper piece was (very slightly) bowed / gapped in the middle (between the screws at the corners) in relationship to the center section. I got some 220 grit sandpaper and using cutting fluid sanded the pieces while the sandpaper was laid out on a sheet of glass. Took a bit off the top and center until the gap looked close enough for the gasket to be compressed. It worked!
Thank you so much for helping! The tune-up happens this weekend, out in the driveway!
Ted
