Hey guys,
Just put the collar back on last night. Bike idles fine now after I adjusted the throttle-stop screw. I put the clip on the richest notch, the stock washer on top of that, and the plastic collar below the clip. Bike ran better, but still wanted to stall out at WOT. Main is still 122.5. Plug was a dry black this morning.
Just put a shim between the clip and the collar. Report later.