My ignition switch (the tumbler assy, actually) has been sticking to the point where its difficult to turn the key. According to one of the MB tech forums I read, this is a very common problem because the tumblers in the ignition are made of plastic and wear quickly. The general consensus there is that when the lock starts getting sticky it should be replaced immediately because if it gets to the point where it won't turn at all it's darned near impossible to replace with out using a drill or a saw.

So my question is this: Has anyone replaced their ignition switch yet? Dealer or DIY, I'd like to know your experiences. I plan on doing it myself...

Speaking of DIY, the service manual states that ignition switch related info in section 8D, which appears to be some kind of supplement because section 8D is not in the electronic version of the manual. Anyone have a copy of it?