Whatever you have on your instrument are better than anything Ping makes, unless of course the gears on your bass were made by Ping. Pings suck. They are cheap, and they can be fine for a cheap instrument, but they suck.
If you are having tuning problems, the chances of your gears being a problem is close to zero. The most likely issues are your instruments setup and your tuning technique. Gears are almost NEVER the issue. Take your instrument to a good repair shop (which is not in a Guitar Center, by the way), and have them take a look.
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M.K. Gandhi