I'm afraid they won't fit through the F-hole of an ES-1 at all. I know because I've got one of those pots handy It's got a full-sized pot diameter, and the extra depth of the full-sized section (let alone the slightly larger PCB connection board) means there's simply no way to fit it into the body. With a normal full-sized pot, you have to angle it in and give it a hard push to fit through the f-hole, but with those deep CTS pots, you simply can't do that.
"I won't fit in this way..."
"No, still won't fit in."