'91 300E No Problems...

[sptt]

Well, I have had no problems with my car since I swapped out my engine with a good used one last year and had my clutch discs replaced in my tranny at the same time. The cars runs and feels as good as a I could imagine a new one might. Going on 210K now. Well...maybe there is something now...my iginition tumbler is getting stuck and the key isn't turning smooth and I have to push in and out to turn it on and take it out. Is this servicable with some lubricant, do I need a new key, or is time to get a new tumbler?