Replace Grundfos circulator or change cartridge??

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Ballvalve

General Engineering Contractor
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My radiant heat high head 26-96f Grundfos is about 12 years old and I am getting some vibration. Bearings getting tired.

I can get an eqiv. taco for about 215$ or get a new Grundfos cartridge for 120$. I know if the stator is scored, the pump is shot, but in no mood to take it apart without a ready replacement. Still pumping fine.

Opinions? Check amp draw to see if over specs would determine bad stator?

http://www.pexuniverse.com/store/product/taco-0011-f4-circulator-pump-ci

They can be had for about $180 at other sites.
 
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