Breakthrough!!!

After a morning of frustrations, the corner transition is resolved. The issue keeping me from realizing the potential of the system to resolve the corner was my lack of belief in the rules I established for the system's structure. The same tectonic system is used for the flat portions of the triangular grid, but for some reason I assumed that the corner would have to be resolved by breaking the rules at some point. Wrong! Only by following the tectonic rules of the system at every moment was the system's inherent flexibility harnessed. I won't attempt to describe the system's connection rules here (you can try to figure them out from the pics), but they remain unbroken! Oh happy day!