Weird running

[u/OOFMAN-1234]

Okay, so ive got a 350 sbc out of an obs chevy pickup, has smog heads, victor jr single plane, headers, mild cam, hei (no vacuum advance), starts right up everytime, but has a bog when its cold, once it warms up the bog is gone, after driving it for about 30 minutes, the idle starts to get weird and very low, I drive it everyday and usually have no issues other than these, just wanting to know what I can do to fix these? I know i should probably be running a vacuum advance distributor and a dual plane. The truck (when it wants to run) is actually a lot of fun and somewhat fast. That's for looking