A little more backstory I forgot to add. Previous owner said either contact switch or relay (I can't remember which he said) had a period where whenever it rained, it would short out and run the unit in the up position until it totally drained his battery. Took him a while to figure out what was going on so it must have done it multiple times. I would have thought it had a limit switch to prevent it from constantly trying to go up but maybe not. Anyways, for whatever that info is worth it may have damaged the brushes more than the actuator itself trying to constantly trim it up like that. Or could be the complete opposite and just a matter of water in the actuator causing it....or even worse, a combination of the two lol.