Thanks Duke!
The glue securing the landing gear legs have been given a couple of days to cure so I can now put the wheels on. Since I have sanded flat spots on the tires to depict weight compressing the rubber, I have to make sure that the tires are rotated to put the flat spots in the right position. A quick-setting two-part epoxy such as JB Kwik Weld works well for situations like this as they give me a 2-5 minutes to make adjustments before the glue starts to harden.
Mixing equal parts of the light and dark colored components yields a dark brown goop with the consistency of toothpaste.
With the wheels attached with JB Kwik Weld, I alternate the model between the jig and a flat tabletop to ensure that the tires' flat spots are in the right place.
And now the model can sit on its own legs for the first time!