Have you tried a little salt and pepper too? Lol
I've gone to olive oil as a post shave (a little how a long way lol), but not preshave. Interesting, I'll probably try this. I can't help but wonder if the additional hair found and removed was due to the difference in razors/ blades. Have you used evoo as a preshave and started with your trusty DE instead of the extreme 3?