Ves finally managed to make a lot of progress after he gained access to the Ebony Everchanger along with other remains of the Emperor Tree.
Although he was not able to communicate directly with the Ebony Everchanger, he spent enough time with the alien wooden construct to form a tacit relationship with it. He simply turned himself into a known presence who always tried to be attentive to its condition.
Familiarity bred friendship, or at least tolerance.
While Ves mainly conducted studies on the Ebony Everchanger itself, he agreed to transfer samples of ebony wood to the Red Association in order to develop an upgraded version that was useful for high-end mechs.