oil level sight glass

I have a 2000 1100RS. I changed the oil before winter set in (around October of '23). After I changed the oil (ran it to warm, waited 5 minutes to check on center stand), the oil was halfway on the sight glass. I've run the bike a few times a month (didn't check the sight glass). Took the bike...

Appreciate any feedback here as I'm completely flummoxed. I went out to do some service on my 2001 R1100s this morning ahead of some rides this weekend [my first decent rides of the year]. Have been rding the bike minimally [once to the office this week] a couple of short 30sh mile loops over...