Update.

I'm back to a 2/4 front and 4/8 rear setting now. I think this is the closest match for the H&R OE sport springs. I think what I experienced before was the "newness" of the whole system. Now that things are settled, this seems to be the right setting.

H&R says "OE sports are ~20% stiffer than stock".

And KYB says:

Setting#: Relative Value:
1 - Same as Factory 100

2 - Same as our GR2 products (10~15% firmer than Factory) 115

3 - 50% firmer than #2 172

4 - 30% firmer than #3 223


For an eight position adjustable product, the damping force values are
approx. the following:
With #2 being Factory at a relative value of 100,


#1 = 95 (5% softer than Factory #5 = 143.5 (43.5% firmer than Factory)
#2 = 100 (Factory damping force) #6 = 172 (72% firmer than Factory)
#3 = 107.5 (7.5% firmer than Factory) #7 = 197.5 (97.5 firmer than Factory)
#4 = 115 (15% firmer than Factory)(GR-2) #8 = 223 (123 % firmer than Factory)

It's all making sense now. You gotta let the stuff "settle".