The faucet replacement is complete and was quite easy. I used a bathroom faucet from Lowes, model #64374. ('Project Source' brand) I was able to easily remove the plastic nuts securing the water lines (used a basin wrench to gently get them loose and tighten up the new ones.) Then the flange nuts securing the faucet to the basin came off easily as well. The new faucet was a drop in replacement. This particular faucet seems to have a MUCH smoother and easier rotation of the water knobs than the stock fixture that Jayco installs. And the price was only $18.46. I can only imagine what an RV dealer would have charged for such a service repair.
Project complete. No problems. No leaks. Thanks for the suggestions.