Added the backup aileron stop. This is a mod added to the original plans that increases the strength of the rear torque tube bearing support via added L-angles and through a substructure that limits the rotation available to the flight controls torque tube. One of the pre-formed pieces I received from Zenith was a little (10 mm) larger than thos in the plans, so I trimmed it down to the plan size, drilled all the parts out, then fit them to the already-installed rear torque tube bearing support.
Backup aileron stop attached to the torqe tube bearing suppor and the cabin floor.