Somebody (preferably SRAM) should make a modern 6,7, or 8 speed derailleur system for vintage bicycles so that constant ebay’ing for slightly used parts to replace heavily used parts isn’t required. The older spacing sizes aren’t crazy different…maybe 120mm spaced cogs and 130mm spaced cogs, then shims can be used. Just a thought.
If this already exists, please…sweet little baby jesus, please…somebody notify me.
And Shimano 2200 doesn’t count.