Hi all,this is my 1st post but have been an avid reader for a while.I recently bought my 1st lathe and got some bits and bobs with it.There is two off these maxi grip 2000 chucks but each one only has two parts,one chrome piece with writing on the face which screws onto a blued metal part which screws onto the headstock.Can anyboby tell me what's missing and can the missing parts be bought.