So am I overthinking this? Do you have to perform any maint. on the elec. motors on a drone, especially if it has not been flown in sandy or salty conditions? When I happen to run my RC trucks in wet, snowy, and muddy conditions, I take the motor out and run it in a container of water, then dry it out, then lube the bearings. Do the bearings in these motors require any "lubing"? H.P.