Ubass tuning machine problem............
I purchased a UBass from a authorized dealer. And i am having a problem with the A string tuning machine. I received the bass and the white 0-ring on the A string broke when tuning and would not turn, so no can tune string. Contacted the dealer and they replaced the Ubass. But, I am having the same exact problem the A string tuner is breaking, the O-ring broke again. No problem with the other strings, just the A string. I asked the dealer to sent me a new tuner, so I can replace. Has anyone else had this problem?