Oh man- RG7!!! When I was a cable contractor I had a house with a direct burial RG-7. Naturally I went to change the fitting as it was rusted out, I cut the fitting off and spent 20 minutes trying to figure out why my RG-6 quad fitting wouldn't cut the mustard.
At the time Adelphia wasn't sending odd fittings to our warehouse and nobody even knew where to get more.
Ended up having to run a temp drop through someone else's yard to restore service.
I then got written up and docked for not getting the neighbors consent for the temp drop.
I learned something that day but I don't know what.