I've made a few changes to my '73, with possibly another change coming soon. It's hilly here, and I have a MTB here that I never ride. But I love riding the Raleigh. So, I went ahead and triplized it, adding a new cartridge bottom bracket and alloy seatpost. 3x7 indexed now. I also shelved the B17 Narrow saddle, as it is a bit too narrow for me. So far I've shaved about 1.5 pounds off. Everything shifts great out in the street here, and I can't wait for a real ride.