Tad Marko wrote:
The thought has occured to me to replace all the rear spokes with DT
Champions and brass nipples. The front wheel is currently falling into
the category of it ain't broke so it don't need fixin'.

Using thicker spokes would not solve the problem - in fact it might
make things worse; you would almost certainly have problems with
breakage of the slack spoke. Have you tried loosening the two spokes
on the either side of the loose one (on the same side of the wheel as
the loose one) about a quarter turn,say, and then bringing the wheel
back to left-to-right trueness by tightening the problem spoke?

Best wishes,

Nigel Grinter
Well-Spoken Wheels Inc.
(wellspokenwheels.com)