Hi, I am part way through rebuilding my 2.9 vr6 and come across a problem. Basically at some point in its life the Cam distributor drive has snapped a tooth off as these pictures show: I can see that the part is an individual item but I cannot seem to find where to buy one from. The part number is 021.109.475 can anyone help me find one? Also has anyone ever heard of this happening and a reason as to why it would happen? Thanks, Andy