It's been a long while since I rebuilt the carb. I thought perhaps some debris got in or something but nope, it was clear that I'd messed up the float setting. Anyway, somehow I managed to get an extra fiber washed under the float valve housing. Once removed I rechecked the float level setting and reassembled and reinstalled the carb, wheeled CF-CLR outside again for take two:
During the run-up the throttle cable failed (Stiff/sticky) so I need to change that and I must have nicked the crank seal on installation. It doesn't leak while the engine is running, but drips a few drops after shutdown. So I have a new throttle cable and crank seal on the way.
Headliner is done, shoulder harnesses in, windshield and top retaining strip installed, and the seat and door panels are nearly ready. Tomorrow, if all goes well, the wings go on :)