i get it. by putting in the additional brace, you double up (or rather try to elimininate the need of) the wing as a side of the structure thereby reducing the strain on the wing bolts. makes total sense now!!!

and there's an added bonus: when you take off the wing, the rear cabane will not be rigid and it's movement may wear the lower joint. by doing your mod, you ensure that even with the wing off, the structure stays rigid.

awesome, darock, show us some pics!!!