I work around the not-kneeling, and it's better than all the pain I endured.
My round mechanic's chair gets one hell of a workout. Before I lay under a car, I make sure I don't have to get up a hundred times.
Funny, but no matter how many times I bring tools, parts, rags, beer, and anything else I can think of, requiring numerous trips from their storage location to the work area...
... it never fails that within the first 5 minutes of crawling under a car, I need to get up to get something.