Hello, I am sure this is a stupid question, but how is the Erlewine type jig helpful for fret leveling? Just a little background, I'm building a guitar and can never seem to fret level well. I ended up finding a post on how to build a knock of Erlewine jig and have started building one in hopes that it would help me with my levels. However, I am a bit lost as to the need of it if I am going to start by straightening the neck so the fretboard is dead level. There would be no need to simulate string tension then would there? Dan certainly knows a ton more than I do but maybe I am missing the intent of this jig? BTW, I have invested a lot of money in STEWMAC tools, and am not condoning ripping of their designs, this one was just too damn expensive.