for some of the above issues.
I made a fake bird house to cover the power jack... I have no use for light on jack.. night blindness. so will not use in dark anyway...
keeps it dry and switches are easy to reach from underneath. never gets wet.
I have a remote relay and switch with buzzer.. so never can leave power on to jack.. I use an old Ford style starter relay (solenoid) . its rated at 400 amps..
as for greasing.. who does not grease something that moves and uses power.. every year...
my opinion.. no one makes anything perfectly .. its called improvement. and we know.. in the RV world. its always 15 years behind cars and trucks. my opinion.
case in point.. only the very cheapest and smallest cars still use drum brakes.. and only on the rear wheels. 30 percent braking..