Does anyone have any experience with cutting part of the new upper rail away to prevent its later breakage? I've seen others on a listserv talk about cutting away part of the upper rail to prevent it from breaking off.
Just curious, as I had my 87 420SEL's chain, rails, and tensioner changed within 3 hours of purchase (had to drive her to my home mechanic)...so, I am huge advocate of this maintenance. And, yes, at 115k miles, my upper chain rails were brown and brittle.
John J. Meadows
'85 190E 2.3L 105k mi.
'83 300D Turbo 298k mi.