850 Ultra XP lean bogs when secondaries open

Now I recall - you taught me that video trick!! It helped me when I was working to solve my stumble.
Your fix is not counterintuitive. You lengthened the pump shot with the smaller shooters to cover the lean hole until the main circuit could catch up. Pretty straightforward theory but takes a lot of trial and effort to get it right!

Thanks and agree.
We all go for the bigger squirter, because it stumbles AKA it needs more fuel......not it needs Less squirter for more time. We want to change the cam to get that extra time, and you can get a little bit more........but they are more for shaping the squirter curve in city driving( in my opinion). When you wack it to the floor, the shape of the cam curve DON'T MATTER! It will start to squirt and will stop when the pump is empty.