So many new developments today, not the least of which was that my speedo broke (tach still works). It started acting wildly - showed I was doing 90mph down Main St. in Reisterstown! An NOS replacement is already on the way....
I did about 150 miles today, and it seems like I awoke a sleeping giant (or so the tach showed!). Earlier in the week I cleaned and re-oiled the K&N filters, as that was really the only part of the equation I hadn't thought to address. So this morning while heading to a breakfast meetup with two friends, the bike hit 9000rpms in 5th gear -- this was just before the speedo went kerflooee, and it was lazily drifting around 100-110-120, but of course when I slowed down to 35mph it was still showing 80! As well, on the way home, I was heading down Interstate 95 and was doing over 8000rpms on an uphill. The tach was rock-steady, and it sure sounded like I was up there in the revs. I can't really say whether the cleaning of the K&N's affected this, but I can't think of anything else that changed in that regard (it was also odd that the filters looked okay to me prior to cleaning them). The temperature today was in the low 60's. Additionally, I discovered that the 30 rear sprocket is perfect - great on the highway, and perfect on the backroads. Don't think I'd want to be revving any more than I am, so the 30 will stay.
A roadside break

A roadside plug check (this is from overall riding today). A bit darker than earlier plugs. The porcelain was brown, and the outer threads near the top were very dark. All looked dry.
Emailed the photo to John, and he was thrilled!
