My Dad has hundreds (if not thousands) of flights on his Excelleron 50. It is not as new as you might think...He's had his flying on a Saito 72 over a year.

He used CF dual elevator pushrods (commonly referred to as DEPS these days) on his and has had no signs of weakness in the tail at all. He cut out the bottom of the fuse to install and glued the part back in. This linkage is as positive as you can get. Zero flex, Zero slop

I might suggest that the damage you see in the stab on yours is the result of elevator flutter if you used the supplied linkages. The ones in the box were some of the poorest material I've ever encountered. Very soft and flexible with very bad geometry required to make it work at the rear exit locations.

Overall, the construction of this ARF was much better than average. I was imppressed with the small details in the fuse construction that we were able to see when the bottom was opened up.

This plane flies really good for such a small plane. He even has a second one in the box waiting for the first one to expire

Richard