I'll second Petzi's suggestion. Go back to f/4.5 for an 8x10.

AND might be time to change timers....

I remember when I started printing with my Ic, with short exposures,
I started having trouble with burning and dodging !

I went to my sensei/boss/mentor and he said, " Pay more attention shooting ".

Good advice. Thirty years later, I'm trying.
.