Pete,
Dont know who gave you the info about black ash......I've made many bows from black ash....and really like it. I make mine from fully quartersawn "boards" and have made lots of mollegabets (stiff handled) and some odawa and ojibwa bows as well....never had any complaints.
Also I love to make my arrow shafts from the stuff, they are lighter, beautiful grain, and tough. Maybe the other fella knows more than me, but he could always send that "junk" to this blind old man. JMO
Rich