Any pics of your tail reinfocment would be nice I have not had any trouble yet but it looks like soon to come.
Here's some pics
I used carbon fiber flat strip(Very thin) on the top and sides all around the Stab/elevators.
Carbon fiber rod for tail braces.
It is now rock solid!!!!
Also had to use some sqare basswood to re-mount the stabs when they sheared off at fuse!!(not very pretty but it is strong!!
Murph..........
P.S. properly reinforced this plane is GREAT!!!! Flies extremely well!!