I purchased a Stages DA 9000 PM off of a Facebook Online gear swap group. Once I received it and got it installed the zero reset calibration came in low. It's supposed to be 890 +/- 50 and it comes in around 775, consistently. I contacted stages and sent them some pictures they requested, which lead to me cleaning it out, making sure firmware was updated, etc, and it still calibrates at the same level.

Anyone have any idea how much this would affect the watt numbers it would display?

I don't have a good benchmark to go off because I was previously using a dumb version of the Kinetic Road Machine with their power reading attachment that never calibrated properly.

If it isn't massively affecting the watts it would display then I'd probably pass on trying to get the seller to track down their original purchase receipt so I can send it to Stages for repair and continue using it as is.

Any help is great appreciated!