Something most builders forget to keep in stock is tuners with an assortment of shaft lengths.
I was caught in this situation on my last build and it brought things to a halt pretty quickly. I was not in a position to wait and place an order for different tuners so I had to change my original planned head stock design.
This unplanned modification lead to other problems and it made me wish that I had long shaft tuners in stock as a general rule. It wasn’t something I gave much thought about in the past because all my head stock designs were the same thickness. As I have branched out to more free style custom designs, the need to have a wider variety of parts on hand is becoming more important. I just thought I would pass this on as food for thought, so that your next parts order might include items of different dimensions that you might not otherwise think to include.