What is killing you is the arrow length.There is no reason to have 29.5 arrows out of a 29" bow.You should be able to easily shoot a 28"(raw shaft)28.5 to the nock groove.Should be much easier to get arrows to spine right then.
125 grain points don't help either,but they may be needed for foc.You may need to drop to 100's.
Try these numbers and see what you come up with.