The pathing seems pretty reasonable to me. But sure if you have 2 flows of units through the same narrow canyon it's going to block. I've played the game thro

The pathing seems pretty reasonable to me. But sure if you have 2 flows of units through the same narrow canyon it's going to block. I've played the game through several times, with a little forethought it's pretty straight forward to just setup things so you only have one flow from a canyon. Sure sometimes you have to build a new repair station to change the direction the units go to repair, or attack from a different side. The occasional particularly narrow bottleneck is, er, a bottleneck. So either attack with enough force to avoid needing an immediate retreat, or soften up the enemy with artillery or air attacks before hand. Once accomplished just build a repair station and avoid the bottleneck except for the occasional reinforcement.