NW Corner is 5.9
Supposedly there's a 5.7 route on the north face but I haven't found it, and if I did it didn't look good to solo.
All the other spires are easy.
There was a 5.7 on N. Face NEWS in the first Beckey. Curiously, it also showed up in the Mountaineers' Intermediate Climbs with a slightly different description ("good granite"). Beckey was going according to Greg Markov who did the climb in poor visibility, not realizing, or so he told me, that it was on SEWS, but for some reason or other it got reported as NEWS. I tried to get an understanding from the Mountaineers' too, but they apparently defy explanation.
Anyway, there is a N. Face of NEWS now. The technical crux is low and though > 5.7 it should not hold back a soloist considering the protection on the upper part of the pitch. The climb needs a more direct finish if it hasn't had one.
Oh, yeah, the route I'm talking about starts from a small cave very near the notch dropping off to the E. side.
Cool. I'll go look for it. Last time I was there, by the notch, I couldn't find a viable line. Worth another go.