Hi
I am a Level 45 BM and was getting killed easily by the bosses.
Your build setup really helped and I totally redid my BM using your ideas.
I wished I had more points. 
Its much stronger now and can withstand boss attacks.
Can you clearly explain how u get Overguard up 100% of the time. Mine still goes into cooldown.
Thank you so much for the build. Gonna get back in the game and level up as much as I can.