My 2005 seems to be doing the same type of leaning. Was it just a matter of centering the nozzle?Took the ski to the lake and it fixed the problem. I guess that either the cable had been misadjusted for some time or someone messed with it. I bought the ski in magnificent condition (44 hours) and I don't think the guy ever messed with it at all.
So anyway, it was an easy fix.
The .pdf of the service manual is a pretty large file.
PM me with an e-mail address and I'll see if I can send it.