combo charts make the secondary axis able to be the primary axis

I use Power BI for all my Business reporting and I have been requested to build pages that will auto update and act as slides for some of the standard monthly presentations. So I Appreciate customization ... some of these charts people don't realize how numbers work.. I have to plug in the values to get the stack columns and then make invisible line to show the % correctly. But they only care about the % axis .. But I need the stacked columns as values to give the correct visual. I wish I could make the line axis the primary axis and make the stacked chart axis invisible. I would love to make the secondary axis have gridlines too which it can't right now. The numbers are relative to each other from their previous calculations so I'm sure it wouldn't ruin my scaling or anything but power BI currently doesn't have the functionality.