Here's a link where I cut em. BL is very difficult to tiller for a beginner. They way it will teach you how to tiller. Because one point that is being overstressed with chisel, and ruin it. But osage is tough for a beginner too. I suggest taking a class on it. My first osage turned out ok, but had to take it down to 40lbs to get tiller right. I still might pike it, and heat treat the belly and sinew the back to get wieght back up to 55-60lbs.
http://www.huntingnet.com/forum/tm.aspx?m=2924396