Cusser
+1y
New air cleaner element too. I'm in Arizona, and typically I've done what you have done on my old air-cooled VW, but I leaned out the carb and increased the idle to about 1100 rpm. I'm not saying that's what you should do, that's what I've done, as emissions at idle are typically dirtier than at load.
And I always made sure that the engine was fully warmed up before testing.