My new to me Witcomb was giving me fits last night. But I think I have everything sorted now. Its a 1969 frame. Its been around a while. The guy I bought it from used a modern group on it. And over the years the BB shell shrunk to 65mm. So the driveline was kinda messed up for my classic build. Shimmed out the BB and that was an improvement. This morning I realigned the rear triangle. Man those 531 tubes are tough to bend. I think I have it all sorted. Gears shift well, wheel sits square in theframe. Now its time to work on the front of the bike. Intall headset and see how the fork lines up. Old bikes need a bit of fettling.