Plugs #1,3 and 2,4 fouling

You know I honestly can't remember the vacuum reading as I set the timing with vac guage something tells me it was around 17 or so(corrected for alt@1000ft)there are no vacuum leaks,I've been leaning towards the choke power wire and will probably take the top off carb again for another look,this edelbrock has fought me all the way from new,but I wasn't going to put the holley on until spring.