Hey possum,
I just checked -- and if I look from the top, I don't think it's perfectly straight. It's very subtle and I definitely wouldn't have noticed anything if you hadn't mentioned it. Also, it has such a great 18th Century look, it doesn't bother me.
I want to put a curve in the bottom, not sure how though -- anyone else going to try this?
For HT, I was going to check with a local knifemaker, but if he can't do it, Lee sounds good.
Also, I asked Mike Stewart (one of my favorite knifemakers) about a good hardness. Here's what he said:
"If you are going to throw it--I would stay in the 48-50 range.
If you want to have it hold a edge--52-54 should do the trick.
Just remember that as you go up in Edge holding--the Toughness level comes down.
Simple Steels are not that effected so you actually have a pretty wide range of acceptable performance."