Im thinking of playing safe and to be in the fence .30 plate.40 or standard gap for me is like Sabre L2 for efficiency but smoother. I did a direct comparison with the prototype during the pass around.
I've not tried a smaller gap in SB so hard to say for L1.
Blade exposures from Wolfman:
.25 = 0
.30 = 0.025
.35 = 0.05
.40 = 0.07
.45 = 0.10
.50 = 0.12
.60 = 0.15