Double congratulations then Mark!
I don´t have 10.5 kilos to slim down but still too much for comfort.
Also my bike is as minimalistic as it gets and slimming down would make it too weak for the rough surfaces I cannot avoid.
The steel frame is HEAVY by modern standards as are the oversized thick 36 spoke weels/touring rims and relatively cumbersome puncture resistant rubbers. The wonderfull wheels you have mounted simply would not survive long enough to make it worthwhile
It is not that I would want it differently but when I am working to cover a stretch of 4, 5 km. flattisch, relatively smooth tarmac into a head wind I sure thínk about a lightweight bike on high pressure tubes... Untill the next bit of ridgey, potholed camino.