lubing landing gears

would be nice if all would put fittings on them. my 5th must have built on Monday I have less than 50 trips and have had both original seize what happens the jack screws seize in jack nut. have taken them apart but have never been able to break them loose so that's why I want to find a way to grease them. if you have ever had one apart you would see that there is no way to lube other than taking apart that's 3 or 4 hour job hope everyone understands what im talking about. its a lot of time and money when one goes bad and you cant buy the jack screw and nut have to buy the assembly