A Thought. Couldn’t you shift the location of the jack and use the wood for the spacer?***

You could if you wanted to put the jack right next to the sensor plate assembly, but I wanted to use the existing hole that was in the pan. I also left it there for esthetic reasons. If I were to start over, I wouldn’t have cut out the hole in the MDF base, and then I could have used that wood as the spacer, but starting over was not an option.