Aha! You must have done something to it. As I recall, only one gear cable was connected (a breakage coinciding with my Enigma getting on the road), the sprockets & chain were both showing their age, & some of the bearings were starting to show signs of being past their best. It was due for a major overhaul.
But I'm glad you like the feel of riding it. So did I, & I'd have kept it if I had more room.