Ok guys I've never seen this before maybe one of you can lead me in the right direction. I have a fresh BBC with a solid cam a torquer 2 intake and a 750 holly and hooker headers. Here's the problem cylinders 1,3,5,and 7 spark plugs look good maybe one jet size lean. Cylinder 2 is so rich it fouls the plug 4 is a little rich 6 and 8 are scary lean. The valve adjustment has been checked 4 times as has the spark to all the plugs. Any ideas?