I bought a used Schmidt dynohub and I can't figure out if it works ok or something is wrong with it. The light part is great, but there seems to be a lot of resistance in the wheel. If I try to spin it when it's in the fork, it stops after a few rotations whereas if I do the same strength spin my regular front wheel basically spins a really long time. The light part works great. I think it's an older wheel, as I couldn't find the water drain hole or whatever it is that means it would be a newer one.