Jason: Bad news first... While I appreciate your testing and willingness to "help"... you really havent found anything. The "findings" dont tell us realy anything that is quantifiable. Please dont take this the wrong way, I'm doing my best to word it in a positive constructive manner...:foot: but you mention after doing a quench and break test that "The grain seems to be of a better quality" Are we to just assume you know what your talking about you've been forging knives for all of 3 weeks...(judging by the dates on your pics and blog entries) as well as a lack of pictures comparing the 2 different end grains.
Good news, your on the right track! keep experimenting. give up the lawn mower blades unless you have them tested and they come back as having ATLEAST .50 carbon content. I the meanwhile Please Please Please go read the stickies... and then re-read them, also PM me your address and I will send you a piece of 1/8" x 1.25" x 12" 1084, and some nice handle material at my cost. to form and shape (just dont twist) into a proper knife. Your current set up will be fine for heat treating just dont use water to quench with. Canola oil is better than nothing though

Again I dont mean to be to harsh, and I hope take what I've typed with a few grains of salt,
Here's a pic of my LawnMower Blade er... blade from a few years ago...
Jason