If I had the material I would have tried to center the brace a little more. Now that I have this brace (3mm 6061)
fitting perfect I can use it to make a better/more balanced brace if needed. I roughed it out and fitted it to the chassis and 99% of the flex I saw is gone. I was applying a lot of torque with my body weight to the chassis and for now I am satisfied.
I just need to drill the brake post holes in the CD section to fit the bushings on the brake posts, contour the brace a little so there is good clearance of the carb slide valve and cut a couple spacers to go between the receiver box connection and the bottom of the brace.
Its drying up well outside and I may get some track time tomorrow.