Tomorrow I'll pop off both front wheels and do a detailed inspection of the rotors and calipers. If there is a mistake, I'll post it, with pics. If correct, this could be an important safety issue.
As far as the position of the hydraulic jack in the pics, this placement and method has been used in countless posts on suspensions, which is where I got the idea. We all know using the roll-up jack points with the original MB jack is unsafe and outdated. If the solid steel jackpoints underneath is truly the best and safest methods, I'll adopt it and pass the info along. The method used in my post may not be the safest, but is still far safer than the original MB endorsed method (using the crank-jack) that came with the vehicles from the factory.
The point of this forum is to pass along information regarding DIY information, making easier and safer for folks like me to work on our cars. I appreciate the information both of you have passed along, and will take it into account in my next post. Thank you
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That said, brake issues aside, I am confident that my method of upper ball joint replacement is solid. Users following it should take into account the proper placement of the hydraulic jack and follow all safety precautions.