engine is dying.. help!

[70c10guy]

Hi all, so my cam swap was a success. After break in, she ran excellent. Day after I started it and drove it. Drove fine, later in the day I started it and it won't stay running after it fires up. Vacuum is around 13" and I also have a holley dp that I tried adjusting the idle mixture screws. I had to turn the curb idle up so it would stay running but when I reached 15" of vacuum, I couldn't get anymore so I slowly backed out the idle speed. And it just dies. This truck was just running beautifully and it still does! Just won't idle. And I have to drive with 3 feet. (t5 manual). Any help would be appreciated, thanks!