I apologize if this posts twice, my computer is acting up. Like Ryoon said, from the pics its hard to tell, but the grain looks good on the end, the knot shouldn't be a problem, and it would be a very good idea to back your board. If you're having problems with the riser popping off you might consider the length of the riser block and how far into the handle your limbs are bending, you might want to shorten the block some. Also, it helps to wrap the handle with cord, leather, or strong string besides glueing the riser on. I hope this helps.