I was just putting new strings on my 5 string sx jazz bass and the A string tuner slipped. I thought it may have been the string slipping but it was the metal pole that the 'A' string wraps around. After a while I worked that much out. Each time it gets close to being in tune the pressure or string tension gets too much and it stops turning as I turn the tuner, then it slips and the string loosens. It seems to me that something is stripped internally. Does anyone know anything about this? Is it repairable? If I have to replace it what will fit in without any more drilling that is reasonably inexpensive? I was really looking forward to playing this in church tomorrow.