Yeah, but Greg...verses evolve in oral tradition. The verses in DigTrad are more common and are better scansion.

5. Now Deadeye Dick and Mexico Pete
had been working Dead Man's Creek,
And they'd had no luck in the way of a fuck
for nigh on half a week --

36. He winked his arsehole in and out,
and make his balls inflate
Until they looked like granite knobs
on top of a garden gate.

Yes, sounds like Service to me.

I think Joe, the poster of the text(s), clearly shows it's most likely of Canadian (and not Brit or USian) origin. And after all, how many Canadian poets are there?

Perhaps one day a manuscript copy will turn up...