Originally Posted by
FBinNY
If you needed an inch or so you might be able to trim housings a bit. But you're over thinking this. If you bought an 80" or 2000mm inner wire and came up short you need a longer one. What is, is. It's not a problem to solve, just buy wires long enough for the job.
+1
One of my bikes, I forget which one at the moment, requires longer cables than the typical default. I don't try to shorten the bike. I just keep a small stash of the longer cables on hand.