Still having some issues

[sandog]

I haven't been able to take my bike down to my friends yet to have him help me get it dialed in. He lives 100 miles to the south, and had relatives visiting the past week. Looks like it will be next weekend before I can get down there to have him look at it.
Starting to get cool here, living at 6500 feet, my time to be able to ride is running out before winter. We're having beautiful 75 degree days now, it's frustrating that the bike still isn't running good.

It runs since I put the new carb on, and runs smooth at lower speeds.
When I get out on the highway and am cruising though, the engine has some missing and hesitation. Not bad, but just doesn't like running at WOT.

Then when I slow down to turn onto my street, the engine dies. Doesn't want to start again unless I let it sit for a few minutes before cranking.
Rather than wait, I just push it the 100 yards to my driveway.

I adjusted the valves a few weeks ago, and put in an NGK plug.
The new plug didn't look bad when I pulled it, not sooted up, just a bit of white frostiness to the tip and electrode.
Any ideas what I can check ? I'd sure like to get this bike running better.