I wish you the best in bringing this old gal back to near stock status, if that's your goal.
What freaks me out is the number of old Guzzis that have very little mileage on them. Who the hell owned these bikes? Who bought them new, and let them deteriorate? It's been a puzzle ever since I purchased my first one in 2009, and got involved with the brand. Granted, I have little experience with the brand when compared to others on this forum. But when I start looking over sites with classifieds (thinking BMW,) it's difficult to find low mileage airheads and oilheads.
There might be something in this that explains why Guzzi sells 6-8k bikes a year worldwide, and BMW sells well over 100,000 units.