318 hesitation when cold

I fixed the vacuum choke a couple weeks ago and now it idles fine when first started when cold. It used to idle very rough. The current problem is that the motor momentarily bogs down a little when giving it gas to accelerate. Then the rpms will kick back up and accelerates. During the first 5-10 minutes of driving it will continue to do this and has died once. The other day it almost died again so I quickly let off the gas and it returned to a normal idle. After the motor is completely warmed up it does't do this anymore.

Can this be the choke plate being stuck open too far or not enough?

Thanks for any input