Great pathology report, Jerry! It is more usual to have a +/- one Gleason grade change, but, hey, from a Gleason 8 to a Gleason 6 is reason to celebrate! (Mine was downgraded from a Gleason 6 on biopsy to a Gleason 5 on the prostate pathology).
You're not wedded forever to the catheter and a little longer won't be the end of the world. Hope the leak is resolved easily.
Take care and keep us updated...Tim