Brian, thanks for your response.
The reply's I've received comments from others regarding the oil leak and they often say to replace the solenoid. But I've never been told what solenoid or where.
It turns out the previous owner left some manuals and repair books. I have an original copy of the Power Gear operators Manual for the Leveling Jack system and it shows a solenoid on the power jack stand. I've sent some photos of the manual if you're interested. There are 4 pics.
If so, go to the Air Forums Home Page, open Photos, open Airstream Motorhomes, you'll see Late Model (Year) on the left. My photos are the newest (currently) to the immediate right under GrHarr. Hover over Power Gear and click.
To see all 4 pics, scroll down. On the left it reads "Posted by GrHarr and open
"View all of GrHarr images" to see all 4 pics.
If it turns out you couldn't care less and have no interest, I wouldn't blame you a bit.