Ahh, one more thing. What I thought were 160's turned out to be a 160 in the right carb and a 152.5 in the left. The parts guy sold me "two 160's".
I closely checked the numbers on the first jet & then installed it in the right carb. I didn't closely check the number on the other jet. Guess what, when we pulled it between dyno runs, & it was a 152.5. Doh!
Moral - always check each & every jet marking individually. Trust, but verify.