Hi, My crank is starting to wobble on the BB so I think the BB square taper is starting to get worn down. Would I be right in thinking that? So here are a couple of questions I need to ask... 1) Which is better an ISIS or a Taper? (I dont know the difference) 2) What tools do I need to change the BB over? 3) What BB is best to go for? 4) What steps do I need to take in order to swope the BB's over? If someone could answer all of those questions I would be very happy! Bike is horrible to ride at the momment because it just constantly clicks =( Thank you, Jack