No flying Saturday due to the crud  (me and the weather :-(), but took the upper cowling off to look for a small oil leak.  No joy on the oil leak.  I suspect the right hand side oil return lines.

When I have the cowling off I always have a look at everything else.   This time I was unpleasantly surprised by the classic cracking baffle.  It started at and was emanating from one of the oil cooler attachment nutplates.  I think I had it a bit too tight, and it must also have been digging into the baffle.  Stop drilled the crack and I'll keep an eye it.   I already have another idea for how to make a better fix.

 Will post a pic later.