So I just bought a Gretsch Corvette G5135. Of course with the Bigsby. This is my first guitar to have a tremelo system and I had no idea there was the wedge of foam trick to restring it. I almost threw my brand new guitar across the room trying to string this guitar without the foam. I am having trouble keeping this guitar in tune. Is this a break in thing or are all guitars with a Bigsby like this? Should I have a brand new guitar set up already? Thanks!