I salute Kerwin for getting this plane to fly with a DLE 30. This Arf seems to be built way out of proportion.

Engine box way too long.
Engine box not strong enough for a DLE30.
Cowl needs to be adjustable...to adjust for prop hub....maybe it will???
Main firewall looks weak as attached to engine box.
Landing gear looks too small in all photos???

Now things that may help!
Use a 19x8 Xoar prop.
Shorten engine box and re-enforce it to firewall.
If need be use a single servo with a pull-pull setup for the elevator. It has 2 arms on outside of fuse...the rest inside..nice.
Maybe beef up landing gear area.
Maybe use a bigger landing gear or at least a better one.

I sure hope the next version is better. A person should not need to do all this too a ARF to get it ready for a popular engine like a DLE30. Best Regards Capt,n