I believe I have solved the problem.Look at how level my bracket was before I bent it downward.
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I measured my bracket and it’s 5” from center of cage mount hole to center of mirror mount hole and it’s straight in design just like yours. If you look at your pic before you bent it, look at the corner cage brace in the back ground that’s at a 45 degree angle. Your mirror bracket is coming out flat in relation and the mounting bolts go straight up from below into the cage bar.
Now look at my pic. I took it with phone level. My bracket goes at a downward angle close to the angle of the brace/gusset in the back ground. My mounting bolts also don’t go straight up but rather in at an angle from the back side and up into to cage bar!