You mean something like the old Mercedes diesels have? I don't think so, I don't really know anything about that. I don't really think there is anything I can do about the crank, to the best of my knowledge it is currently installed properly (undamaged pulley, new bolt torqued properly, etc) and doesn't seem to have gotten any worse since the timing belt job was done. The person who did it pretty much told me its fine and its none of my business to worry about it, but who knows. I already told her if it starts to get worse she will need to either rebuild this engine with a TDI crank or look for another one.