Decreasing the starting line ratio should make the car a little easier to hook up, you will go down the track further in low gear and go into high gear later further down track which means it spends less time in high gear also
You have a very stout "SB"
I know another racer (10.5 Outlaw car)that went through the first gear ratio spectrum when he switch from a Powerglide to a 3 speed Pro Flyte, he had both 4.10 and 4.30 for his car also, I think he may have ended up using around a 1.80 to 1.92 low gear ratio to get the best reaction and 60 ft. (1.09 maybe)times