I got the same BB as you and had the same trouble. Didn't really know what it was, just thought it was new bearings and carried on using it. I was running a half link chain and the swapped to a kool chain and the problem went and now it spins free as a bird. I always used 128mm BB and it's only been with this bit of shit that it's happened. I don’t trust it but have no money So what chain you using? You could try a kool chain as they are a wider BMX width chain. Hope this helps Bruce