OK, this sounds bad, but this project has gone on for so long, that my masking tape/Sharpie labels are illegible. Yes, the lettering has bled into the tape over time and turned into mini-Rorschach ink blots.
Update: I had to cut on my seat because it is so wide, the edges really dig into the insides of the thighs. I kept thinking all this time that once upholstered, I wouldn't feel it. Since the rear ride height has been raised a bit, the harsh edges of the seat were unbearable when straddling the bike. Sitting on it was fine, but once I had to put my feet down, ouch! So, I trimmed the sides to the width of the subframe. Now my worries are that the seat has lost it's rigidity because of the loss of the lip.