Holley 2280 throttle bushings

Has anyone ever made bushings for a Holley 2280 throttle shaft?

I just got done rebuilding mine and can't get it to idle and adjusting the mixture screws doesn't help. I noticed gas leaking out of both sides of the throttle shaft once the car was off.

Such a shame because the engine was way more peppy and quick to rev than with the old Holley single barrel