I managed to do something similar, if that’s what you meant. I have attached the model.
Solution.skp (752.5 KB)
Big thanks for this post! I just started a fresh model and was about to try and figure out how to make this work, but instead I found this post and I’ve just stolen your Solution file and saved it as my own to use for all of my adjustable shelves! Thanks for solving all the issues for me before I ran into them myself 
