How would you fix this alignment issue?

I am currently building my second Roban 800 size heli, a AS365 Coast Guard. Following the instructions I drilled the tail mounting holes, glued in the pem nuts, and life was good. Now I am installing the mechanics and when they are bolted in place, the tail assembly does not line up with the front fuse half, or the mounting holes. I see only two ways to fix, raise the front of the mechanics as you can see in the photos with the screw driver, or enlarge the opening where the tail boom exits the fuse into the tail rotor area, (not my first choice). What would guys do, especially the Roban builders who may have delt with this already? Thank you.