I had a BSA too (a B25). Terrible electrics, dropped barrel liner, dropped valve guides, regular big end failure, gearbox selector spring failure, continuous oil leaks (which lubricated the footrest tapers, so the footrests rotated!), terrible brakes (single leading shoe drum). On the plus side, great noise from the single cylinder, great handling (I could easily trounce Suzuki GT's and Honda CB's around the twisty bits, only having trouble with Yamaha RD's). Our Galaxy's been fine so far - apart from the auxilliary water pump... :D