I agree, they are decent to work on once you have tackled the train bridge for the first time. A bit of a pain, but not that big of an issue.
The Balance's shock system are very easy, indeed, to service.
When done, the movement was producing +5 s/d, 265amp and .1 beat error. Lift angle of 49. Which is the correct Lift Angle for the 8215.
I look forward to a future service with the new 9015 to compare.
Thanks again to Lawson for this very helpful Miyota Service walk through.