My apologies for the crappy quality of the video.
We finally did it! Last night we changed the spark plugs, put a filter on the freshly cleaned carb, screwed in a couple of bigger jets and she fired straight up on both cylinders. After some minor fine tuning we decided to take it to the road. It goes like stink!
We've been fighting this carb for a while now and some people started to lose faith, but we won. We still have to do a little fine tuning (it's still a bit lean in the bottom ranges), but we've now proven it can be done.