Project creep, even with tail light rebuilds - that happened to me also. I had one bulb that kept failing on the driver's side. That led to dissassembly of both tail lights, cleaning, new gaskets, new bulbs, the need for a better tail light assembly on the driver's side (thanks M. Pugh!), a couple replacement (used) lenses, and finally spraying both tail light assemblies with Chrome aluminum paint. It turned out well in the end.