If everything on the tail boom is tilted the same maybe your entire tail boom got turned a bit in packing or something. It should just be clamped in place, so you can probably just loosen it a bit and twist it. Everything should be good then.

But the tendency to go left is a function of the way RC helis are built, with the tail on the right. To counter the rotation of the rotor the heli will push the tail to the left, and in effect push the heli to the left. In a stable hover, if the heli is sitting still, that means the heli should be leaning a bit to the right. Different people probably have different opinions on how to accomplish this, either with trim or setup or just by flying it out. Its up to you really.