I built a Jazzmaster for a fellow, with a Mastery Bridge and Vibrato, and he's breaking a lot of E-strings (.011). Has anyone had this problem or heard of it with the Mastery Bridge?
This has nothing to do with the Mastery ,it is the trem plate.I had this problem on my JM with a Mastery. My tech gave me a very simple solution:
Cut the ball end off of a used string and string it thru to the end (ball) of a new E string. String it up so that it is what rests/makes contact with the back of where you load the string thru. It kind of cradles the ball end of the new string. This has completely solved my breakage problem.
And dont forget to use a piece of string to "floss" your nut and bridge every time you change strings-- keeps the strings moving freely across the contact points. A little "Nut Sauce" lubrication helps also