Thank you for all the supportive comments guys.
toomanyknots, I don't think you need groves if the tips are wide enough and the curves not too radical.
Dave, I don't think dry heat would work well putting in curves in yew wood - the belly would likely crack. I'll boil the tips to be on the safe side. Stay tuned...
Jon, thank you for the compliment. The thing about these build-a-longs is you can never be sure of the outcome. If you get a decent bow out of it you're a hero. If the bow breaks, well, no one will remember it after a few weeks. If I was smarter about it I would wait until the bow was finished before posting, but you lose that sense of immediacy and anticipation. It's kind of a crap shoot...