For future reference, the p/n was 160927AS. The casting was a little rough and required a little grinding around the top edge but seems to be working fine. Before I started this project it required to be run on about half choke to run at higher RPMs. So, I rebuilt the carb. It's still doing the same thing. I've had it on and off 4 times checking and rechecking everything to no luck. It takes gas just fine when letting off the clutch from idle but stalls out when above 1000 rpms. Ideas?