And to think I almost scrapped my old W2 heads

Trying to figure out why my Duster was driving so hard left this past weekend at Norwalk. 6.07 clicking the 60 foot timers with the rear tires. Made a shock adjustment and ran 6.06 with a 1.26 sixty foot still driving hard left. 2nd round same thing so I got out of it. Checked the rear slick circumference knowing they were right when I put them on last year and they checked out under 1/16 inch difference so they were good. Talking to a Racing friend that taught chassis tuning at Wyotech he said throw your current weight in the drivers seat and check your ladderbar preload. I reminded him how fat I was and he laughed. Well I almost scraped these cracked W2 heads but can’t bring myself to do it. Well they are 51 pounds each so another 150 pounds or so I should be close. It’s gonna be crowded in there.