Probably the pucks under the cam towers. Are the spark plug areas oily too?
Hope not, they were replaced when everything went back together a year or two ago

If MRieck notices he can chime in, I haven't seen anyone else with this problem, meaning it is likely rare and/or I screwed it up/there is damage on the valve/rocker from it breaking last time.
Check the end of the valve and the adjuster pad for a wear pattern
Unfortunately it seems that in both cases the adjuster breaks/annihilates the pad, thus forensics are hard to do. It is consistent with it becoming loose. Maybe some blue Locktite next time?
That being said the valve stem looks perfect, and no noticeable misalignment of the rocker side to side. It could be bent up, but also the cam looks mint.
The only weird thing about my head is that I am not running the rocker shaft bolts, only the alignment bolt. I am pretty sure this is not an issue.
As for the oil it may not be coming from there but more towards the centre and running to the outer fins when parked, then cooking there on the next ride. Motor was last washed >5000 miles ago :/ I'll do it soon, I promise.
Will update when I have the new part in hand, dealer isn't taking orders over the phone and I don't have time today, looks like tuesday.
This is really the last thing I thought I'd be doing today, first nice day of the season.
Jon