Still likely carbs clogged or down on compression, the engines do NOT rev cleanly with low compression. The choke on seeming to push right through may be choke removing part of your power to not show the sudden drop any more as it has been evened out by it ALL being too rich instead of just at 6-9. That jetting with an off engine SHOULD make the problem you describe, you are missing compression according to your earlier test results. Maybe the plugs are still messed up too, too rich like what you are doing will do the same as well, DOHC ignition is notoriously weak and must be perfect to not lay down and die. Your uneven idle is showing more of the same, valves leaking (compression) or plugs not good and clean to hit consistently are what make idle jump around a lot if there is no vacuum leak. The idle if right will be more like 1100-1200, nice and tight.
Every one I ever had a header on revved clean as a whistle to 10,000 rpm in the lower gears with 75-115 jetting. No bog no fuss no slow, in low gear you better be holding on, it does it pretty quick.
Pull plugs, if still too dark then change them or ride the bike more to let them color back correctly, sometimes all it takes is some time. Also, can't remember your initial valve settings before they got set, if you had any close it can be that the now looser settings then close up again to again be too close. It happens a lot and why DOHC guys know to run the crap out of the engine after setting valves that have never been set, they get close again sometimes in minutes showing they were WAAAYY off. That running the dog out of it is the 'Amish tuneup', it also helps scrub carbon off of the now hitting valveseats. When the carbon is gone the valve may again begin to leak.