Mk10 piston oring removal

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Yeah, started at 140 but after 10-20 cycles it was mid to high 130s. Thanks for the heads up though!
 
PTFE grease like Christo-lube or Tribolube as opposed to silicone will bring the IP down a few psi. UN-polishing the piston stem is also worth a few.
 
https://www.shearwater.com/products/peregrine/

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