Just like to put closure to the problem that I posted. I found the problem; namely some knucklehead (me) took the faucet spout aerator off to clean it and then cross threaded it when putting it on. Thereby, every time the water was turned on, some of it leaked from the aerator down the inside of the spout cover to the sink and down inside to the vanity. The faucet is totally all plastic and rubber washers; no metal. The spout hanging over the sink is only a decorative shell that has a plastic tube in it.
On another subject, namely the kitchen faucet, I have been trying to install a beautiful Moen unit that I had laying around. I found the plumbing fitting in the MH that goes to the faucet to be all wrong for the Moen. It is a large female fitting and the Moen is a small 3/8" female. Obviously as sex goes, two females can't couple (LOL). Thank's to Home Depot, the Watts LFA-124 adapter.
Gale & Hank- 2012 Berkshire 390BH