318 missing and stalling once warmed up and at cruise

Jason Maitland said
I've been monitoring the plugs... Sometimes they look great, other times rich... The fresh plugs I just put in seem to look okay, however I will pull them , take a pic and share here for some seasoned advice!

If they look rich when it runs like crap look the needle and seat. Probably trash in it. Or have a look at float level.