If you cut out your Trex canopy as detailed in the Align instruction manual
you will more than likely notice
that the aileron control levers attached to the swashplate will bind with
the top rim of the canopy.
There are several fixes to this. The best I heard was softening the canopy
with a hard dryer and bending
the now slightly supple plastic out of the way of the swashplate cyclic
pitch control rods.
On my own machine I made the modification pictured below, which although
untidy does fix the problem.
In a future dremel episode I may tidy it up :)