Peter,
I was just saying the same thing to Brian.
As far as blade wear adjustments go I just adjust using a board.
On my Martin the infeed can be adjusted for concave or context cut.
On my Felder even the outfeed adjustment is a bear and with insert knives it almost never needs adjusting thank god. What a pos....
As for general setup I personally like a strait edge the length of the machine and one way gauge and a dial indicator attached to long straight edge.
That’s just me. It was one of the Felder guys whom document jointer setup that I learnt from. It could be ass backward or overkill but it’s what I know and what has worked.
The machine at work had the cutterhead swapped for a Byrd. My guess is someone messed up the infeed when doing that work a it is going down like a lot. At least what I call a lot. Easily a 32nd or so..