How to center the page when printing a document with the Custom Scale option

Whenever I try and print PDFs from Adobe, it's common that the paper size of my PDF will be different than my printer's paper size (A4 -> Letter or Letter -> A4). Although the "Fit" option does work in centering and fitting the page to the destination, whenever I chose the "Custom Scale" option, I am able to make the content larger but it seems that the scaling is anchored at the top left corner and not the center. This makes the text/content appear larger but off-center. Is there a way to tell Acrobat to scale from the center or somehow center the document after scaling? Thank you!