OK, I'll have them install me heavy wall lugs.
landyacht318 wrote:
The Dielectric grease in the lug, while a good idea, is overkill, unless perhaps you plan on boondocking with your wheels buried on the beach and waves slapping your rv at high tide and have your wiring submerged.
Axles were buried alright. The actual beach is 300 ft away, but the entire area was like a beach. The photo was made after the rain stopped.

Mud after the hurricane went almost up to the doorstep and filled the under-belly. So I moved AGM batts from the front perch - where they were sitting few inches below the frame, to the front storage where they are sitting above the frame. At least, they are out of direct rain and marine spray now. Rain is rare, but when it rains it pours.
Little OEM electrical box with trailer wiring under the front frame came close to being buried in mud too - see those dunes around the tongue. I think I'll replace this box with a waterproof plastic box. Doesn't bother me much, since the loads are off when I'm not there, only controller is running.