I know not a thing about cutting Bermuda- an uneven cut many times is dealing with air flow. First off , you really should be measuring from the blade tip rather than the housing to be accurate. The deck and blades should be clean. Specifically i can tell you that some like the quality of cut using the bagger blade or simply the existing lower blade. I had a person this summer who had a similar concern. She wondered if her blades should be replaced rather than sharpened. My reply was they looked nearly new and should sharpen and balance up well. In the end, I ended up replacing the blades for her to be satisfied with her quality of cut.

Thank you for the tips, Just to be clear the Hrr216 is a self-propel walk behind mower. I have measured from the blade tips to the cement and still get 1/4 inch difference from the left to right side, rotated the blades to the opposite side and get the same measurement. I may have bent something without knowing.... Doh!