holley 670 street avenger jetting questions

I'm running a 770 avenger on my 360 magnum. It was running really rich out of the box but otherwise is a reliable carb that delivers good power. I took a look at the front jets today to drop them down a size or two to bring down the richness. I expected to find #70s which is what they are supposed to ship with. Mine had 72s . Maybe yours is jetted on the lean side.