[Steve Tinker]

Kim,
Now you have a baseline on the deviation (-6 deg), I would just monitor it over the summer and check again before storage for your Danish winter sets in. To be really clinical, remove the sump and check for plastic debris from worn tensioners.
If the deviation numbers don't change & the sump is relatively clean, just accept it - after all, the deviations are at maximum, not over.

As for the chain rattle, you may find replacing the 3 x chain tensioners will improve the noise substantially - at least it did on my engine @ 105,000 km. The tensioners can be fitted without removing the engine, but you have to lock the crank & cams before removing each tensioner. About a 2 hour job total, and not too expensive for the parts.