I have a RF ISIS BB that is starting to not turn as smoothly on my FS Titus. I am torn between buying a new crankset with the external style BB or ordering this BB from AEBike to run out the rings on my ISIS cranks for about $60 delivered. I will probably still go for the external style crankset in the spring but being this close to Christmas I'm trying to assess my options Does anyone have any experience with this BB, good or bad?