Help with Choke/idle Settings

[conoco]

I can't seem to set my electric choke correctly and wondering what I am missing. I have watched videos and played with multiple settings. Here is the problem

I am in Alaska and it is starting to get cold. Just installed 1906 AVS2 and it runs great. I will go out first thing in the morning my truck will fire right up. Goes up to about 1500 rpms which is where I have the high idle set so it warms up faster ( Specially when it starts hitting 0° and lower) it will run great and strong for about 2 minutes and then it will slowly start bogging down until it starts sputtering and eventually dying. I will go through that process about 2 times until I just keep my foot on the gas a little so it stays current and warms up. After it warms up it run great.

Here is what I have done so far.
Changed my timing to 8° advanced ( I have 20-22 vacuum at idle)
I have unscrewed the choke and adjusted it all the way to the top mark which from what I read will make it stay closed the longest?
I have played with my idle mixture screws and everything seems fine.


The only thing I can think of now is maybe I have to much fuel pressure? I have a fuel pressure gauge installed and it reads 6-7 psi. I had a Holley carb and switched to the AVS. That's the only thing I can think of now.

Like I said once it warms up it runs great. No hesitation, no missing, it rips through first ans second.

Just hoping someone might know what I am doing wrong or what I can start trouble shooting.

I do have 2 separate plug in heaters. ( 1 for the engine block and 1 for the transmission) If I parked outside I would use them however my truck stays parked in the garage. But thats not the point. I would like to leave it outside in cold weather and know I can fire it right up and it will warm up without me being there. Any help would be great. Thanks everyone.