I normally don't use a torque wrench on the base cylinder nuts anymore. I've got a good feel feel for being real close on the torque just by hand. Even tightening from nut to nut is more important than actually hitting an exact number anyway. I practice a little beforehand using the exact tool setup I'll be using but on something else then test with a torque wrench to make sure my feel is close. Never had a problem with a leak ever on many bikes.
I was able to torque it down with the motion pro torque wrench extender run at 90 degrees to the wrench. It’s slow going, one ratchet click at a time but it works.