Hi I've just been trying to do the intonation on my TLHA and the saddle for the bottom E string will not go any further back due to the spring being squeezed to it's fullest. This being said I only need two or three more turns to get it right. Is it an issue if I remove the spring to get the last adjustments?
Another option is to look at your bridge placement. Can you move the bridge back a little 3 to 5mm....it will give you intonation travel for all of your strings now and in the future?