I only ever do a two pass when straight shaving, nor do I own an alum block. An alum block would be nice, but I'm a minimalist. I own two straights, I make my own strops so that isn't an issue, and I have hones up to 8k which is all one needs for shaving sharp, one brush and tubes of shave cream. With that gear and two passes, I manage to get BBS 98% of the time. The other 2% are just bad hair days really. Congrats on your ongoing improvement and success.