I really want at 335 sized Gretsch, so I have sold my beloved G6118T and ordered a G6620T which has a Bigsby B7CP. I actually bought a Korean G5622T which I planned to upgrade, but I changed plans and went for the G6620T instead and will sell the G5622T as soon as I receive the G6620T. I have never had a B7 before and I understand that its steeper sting angle can cause tuning problems when using the Bigsby. Tone is of course priority, but for me using the Bigsby is a key part of my Gretsch playing and I need to have a working Bigsby. No divebombing here just the usual Bigsby thing... I have considered ordering a ABM Roller Bridge for it for smother string trade over the bridge and perhaps a BiggsFix to change the set string angle and lower the pressure on the bridge. Callaham's front roller is another alternative, which doesn't affect the angle, but perhaps it's a good alternative in combination with the ABM Roller Bridge? What are your experiences with the B7. What do you do to make it stay in tune when using the Bigsby, except for the obvious things like making sure that the nut if properly cut and that it's stringed properly. Any experiences with ABM Roller Bridge, BiggsFix or Callaham's Front Roller? Any disadvantages with them?