if you are after mechanical help and dont know what the parts actualy are, try putting a picture or two of the problem parts, a pic can speak a thousand words and save you a week or two! one mans idea of a cartridge bearing is different to anothers! we who do know would love to share with those who dont but often cant because of bad description, Keep it coming and more pics if poss !. the flying scot..(matt the mad mechanic) ride for life.