HELLO. I NEED TO KNOW WHAT IS THE BEST WAY TO CHECK YOUR PLUGS TO GET AN ACCURATE READING TO SEE IF RUNNING LEAN OR RICH? JUST INSTALLED A NEW DON HAMPTON 8-71 WITH NEW DUAL 750 EDELBROCK PERFORMERS ON A 441 BBC REPLACING A WEIAND 177 AND A 1050 HOLLEY. MOTOR STARTS GREAT, IDLES PERFECT AND RUNS GREAT UNTIL YOU GET IN THE 4 BARRELS THEN IT JUST BOGS FOR A COUPLE OF SECONDS THEN GRADUALLY PICKS UP. I'M NO CARB WIZ AND READING THE EDELBROCK BOOK SAYS THE MOTOR WILL BOG RUNNING LEAN OR RICH. I'M IN MICHIGAN, FAIRLY HIGH HUMIDITY 700' ABOVE SEA LEVEL. ANY HELP APPRECIATED. RANDY. http://www2.***boat.com/image_center...51Im000006.jpg