^^^ what Alex said.

 

I finally took it in to Les Schwabb and they fixed it for no charge. Loose stem they said. Amazing how which tech Les Shwabb you makes such a difference. The last one couldnt find a leak, and inflated the one tire to 45psi, left the others where they were. Today the guy fixed it, inflated all the tires to a healthier 40psi, and even put stainless stem caps on for free. What a guy. Problem solved I guess, and I have been keeping the tires at about 39psi and happy with the results.