Sounds like the actual trainer is fooked - whilst the Pros give fairy dust, they're not that far out. My Pro is about 20% out compared to kickr on BSIM, and about 5-10% out on Zwift on the flatter sections (zwift hills they are pretty similar)My pro is giving me an embarrassment of riches compared to my classic. I had slingshots on my classic, which lasted as long as I could push the power, but not a lot else. The classic gave a slightly high reading where power was concerned but only 10-30w, compared to vectors.
The pro just gives me silly power. I am seeing 400+ watts for 200 or less on the vectors. Vectors give a number and the pro doubles it. It is just plain fu'ts.
I am with @bobinski on this. The pro he had, that I now have, is mad . It does not lend itself to enjoyable virtual riding because it is so wrong.
Can you get Bkool to dial in and try to calibrate it?