First of all I have a major problem with a creaking noise coming from my bottom bracket. Ive taken it all apart and replaced the bearing, but it is still making a noise (it is not the peddles). How tight should the lock bolt bit be (im not sure what you call it). Could the problem be with the cranks?
Also sometimes when going round corners fast the Rear Derailer shudders, Why is the happening? their is a little bit of play in the rear wheel, would this have anything to do with it?
Many thanks in advance.