my pay rises

Not all by itself it doesn't. Your boss raises it. The flour raises itself. The flour and the pay rise because some(one/thing) raises them. As for the hang thang, it's not so much a question of what is "correct" as it is what has been in the past and the fact that with type A verbs of this class, we seem to be erratic at best in this transtive/regular intransitive/irregular thang. I've started reading Michael Crichton's Timeline and he uses shone in a transitive sense somewhere right near the beginning. There are some cases where we just don't use it wrong. Nobody ever says "I shone my shoes", for example.

I have added sit/set/seat to my list of type Þ verbs, but haven't done into any research on them yet.