Just put the spare tire back on the tire carrier and it's wobbly. I think I'm missing something as I have the lug nuts as tight as they will go. Is there something that goes behind the tire that I am missing?
A good alternative to the threaded washers are the big washers that are used on the rear upper shock mount. Anyone that has changed shocks usually has some in the stash, plus they are big, heavy, and fit perfectly.