X15 tractor vibrates when engine brake is on

[JimT]

If you have Insite, you could also try a cylinder cut-out test. Make sure your actually running on all cylinders. Although given the recent repair I'd definitely be thinking along the same lines as Chamberpains and Waterloo. Gotta make sure someone didn't screw up.

Also, I gotta wonder if what you're feeling now could be related to the true cause of the cam needing to be replaced?