I just built a new rear wheel. It's a 32-spoke
700C. I got it true and round, except for a
slight "hop" near the seam, and I'm not sure how
to remove it. Anybody have any suggestions about how to
remove such a "hop"?
Thanks!

"In both welded and spliced rims spoke tension may not be uniform near
the joint. However, completely correcting this error may be
impossible." - Jobst Brandt

My own experience includes accepting a .030" radial hop at the joint in
MTB rims. On road rims I've learned to "persuade" the joint just a bit
prior to lacing. I have found successfully over coming the rim joint
"hop", one of the more rewarding aspects of wheel building.

Best Regards - Mike Baldwin