Anti virus blocked me from looking at your pictures.....will try again when I go get my phone out of the truck in the morning...Thanks Bob...
The 3/8" Brass Lamp Stems are popular. You will need 2 Brass Nuts, one for each side. After you get it installed, cut the excess length off.
You can also use Silicone Grommets available from Maverick.
No picture in my collection, but a Brass Air Hose Barb will also work. Make sure the Probe will go through the hole. Cut the Barb off, and file smooth.
Bob
For some reason it didn't post properly in your post. So here you go.
I think from my reading, someone has to approve the picture manually when you are new to the site before they open up.
It must not have been approved yet.
Bob