@aircooled (Bruce), thank you for your reply. I have a crankcase vent hose where you have your tube. You may be able to see in the photo that I had to grind away two of the ribs in the aluminum alternator backing plate to mount the tube.
I changed from CSP linkage to Vintage Speed but that didn't help. I also considered JayCee linkage but it looked like that wouldn't work either.
I have given up on using Da Tube and will go back to my original method of holding the wires. I spent more than just the cost of the tube trying to get it to work - new wires and connectors and crimping tool.
You got me all excited when I saw I had a Da Tube response. I thought I had a buyer.