He’s just pointing out a valid thought error. If you’re really looking to shave weight, that’s not the place. Everyone keeps telling you this, (literally from the first reply) but okay don’t listen. We’re all idiots. I get it, the bike has sentimental value and you enjoy the aesthetic of it. It’s probably your first tinkering with a bike of this sort... doesn’t change what it is... or what it can be. Which was never supposed to be a fixed gear / track bicycle in the first place. IMO look for a quality BB that’s gonna last and do you good... screw the weight aspect. Sorry for the tough love... You’re not installing an anchor. That is all. Chill