hi andy,if you still have the stock wire in your tone arm i would say get it re-wired first if your not planning to get a new tonearm anytime soon.
I recently re-wired mine and there is a big difference in sound.Im not sure that you will get the most out of a new bearing with the stock wire you have at the moment and i think the thinking is to upgrade the psu before the main bearing,but im no expert and im sure someone will with more knowledge can advise.
Darren
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