I tried using the wheel in the picture, because it’s not directly under the gate, I think it’s what’s causing it to bow. These are our driveway gates, and I have two 8-ft gates meeting in the middle on either side of the driveway. That’s the idea anyway, but currently I just have this piece of shit seen in the picture. The driveway slopes down away from the gate when it opens, which I don’t care about. I just want it to sit level while closed. 95% of the time it is going to be closed and sitting there, and will only be opened when we are leaving or coming home.
Thank you for this very detailed response. Unfortunately I can’t use narrower gates, since both 8 ft gates close in the middle as this is a driveway gate.
I am absolutely planning on putting diagonal brace boards in, but since the front material is only 5/8 in thick, and the back has three horizontal boards, I didn’t know the best way to put the diagonal brace boards in.