Joined: Sep 2017
Posts: 2,382
Likes: 1,269
From: Hotel CA / DFW
Bikes: 80s Colnago Super/NMx, 50th Daccordi, Pinarello's, Guerciotti's, Masi NS, 90s DB/GT Mtn Bikes, 90s Colnago Master, 96 Serotta Colorado TG, 95/05 Colnago C40/C50, 06 LS TI, 08 Lemond Filmore FG SS, 12 Cervelo R3, 20/15 Surly Stragler & Steamroller
If all the current shifting for the 9sp? still works cleanly then not an issue.
If not, derailer trimming may return to clean shifting.
For a SS, your delta offset? would probably be more of an issue with the chain line alignment.