I have a copy of that Burdo guide and it looks like the route you climbed follows a fair bit of "Pampas Drifter" (5.8, Grade III-IV). FA was by Pete Doorish and Alex Cudcowicz in 1990. Not the greatest pictures, but the topo and (brief) description are attached. That team also had the first ascent of "Archer", which Dale Farnham told me was named after a dog Pete had at the time. I think the main difference is that you jogged left under the "white headwall" and Pete and Alex kept to the right?
Regardless, I have been really curious about this route (and Archer) since I came across it in the old Burdo guide. Hope that your TR puts some more traffic on it.
Nice work!
