ROR retrofit with support beams added

I’m almost finished with gantry support at this pic. This week I added the pair of 2x4 at top between the vertical 4x4 end posts and the pair of 45-degree supports with cripple blocks. I also removed the temporary 2x4 which had been inserted at mid-span (used as support to ‘rest’ roof panels on gantry rails when I was lifting roof into place) . Ran the roof open/closed a few times with the motor and I could detect less vibration in the 4x4 vertical posts with added cross-supports.