My 64 sl had a slight notchiness somewhere in the linkage, no big deal but at about 1/4 throttle I have had (for years, but getting slightly worse) a slight resistance that I could never trace. After cleaning and lubricating everything else, I finally ended up at the gas pedal. Eureka! There is a thin flat (I would say teflon, but that wasn't even invented then, I think) insert in the upper receiver at the top of the gas pedal. I took it out, cleaned it, and found a wear notch. Just turned it over, reinstalled, and voila...good for another 39 years I think. Sometimes its the simple things, but happy I am.

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64 230sl, my daily driver
94 E500, sold
98 E320, family and dog hauler
04 C240, safe machine for teen drivers, but a poc
08 audi a4, yes we have gone to the dark side