RE: modifications on a WM Dago Red + YS110 ?
1.10 on the 46 sized Dago? Ouch! KUDOS for trying it sir---
I did fly a TF Gold Ed. (60 sized) with a YS-1.20 on it and uh...WOW! The entire plane was glassed so it was a boat anchor- As long as I had power it flew great just landed a bit "hot".
I would glass and pin the firewall, glass a BIG section in the center of the wing and also use flying tail-wires to strengthen the vert and horiz. stabs assemblies.
No guts no glory!