[Xringer]

I don't think my end-vents are effected much by wind, but it's possible that wind
hitting the ridge vent is causing a vacuum effect to suck out the heat.?.
(See drawing pic of garden sprayer).

Theory #2:
I think that my air intake is creating a low-pressure-area a few feet around it.
Air is going to rush to the intake, to fill the vacuum.
But, it's going to take the path of least-resistance.
So, instead of coming in from the end-vent (as I wished for), air is being
sucked in from the outdoor air, (1" above the roof) passing thru the mesh in the ridge vent..
The air being sent down to the basement is a Mix of warm attic air and cold outdoor air..


If Theory #2 is correct, I need a way to block up the ridge vent for about
10 or 15 feet on either side of the air-intake and temp sensor..

I just took some plastic shopping bags up and stuffed them into the slots in the attic peak.
Got 3 or 4 feet blocked off on each side of the intake.. Might help a bit..