Originally Posted by
Homebrew01
"cable tension " is not relevant in this case, since it's vintage non-indexing.
OP, you could try letting out the High limit screw a bit more, even though it will be a tiny bit too much when on the small ring, but riding small-small is not that common, and even still, it may be fine.
This is what I've done and everything works fine. I guess I just expected that the limit screw settings that worked on one chainring would be just fine for the other chainring as well. I see now there is some compromise that needs to be expected.
I was unable to add a few chain links. 1 link would have been fine, 2 links were too long.
This is what friction shifters and classic and vintage is all about though, trimming the shifters for each gear selection!