I think I have found the solution to the infamous Edel bog when going into the secondaries. I have seen tons of posts from carb gurus who all seem to say it's incurable and to use a different carb. Or change the auxillary air valve as carbking states above - though I've never heard of that one.

I had this issue at one time and after going through the whole carb when I had it on my work bench I noticed that the secondaries from the factory open up VERY quickly. To me this didn't seem right. I am by no means a carb expert and I wish I had more technical information. But if you go to punch it and the secondaries open up too quickly too much air will come in and create a massive lean condition - or bog.

By playing around with the opening and the closing of the throttle I noticed this little "s" or "u" shaped rod that connects to the secondaries on the passenger side. Take that off and bend it. (this was years ago and to be honest I'm 50% sure I bent it so the 2 ends were closer together But after this I put the rod back on and voila - the primaries opened up and the secondaries now did not open until about 3/4 WOT where before it was like 1/4 WOT.

To sum it up this carb that I was about to throw away runs very well. I definitely want to get a nice Q-Jet in the future, but for now I'm not really in a rush to dump it. It may be worth a shot for someone experiencing this issue. Results may vary Good luck.