Here is the question of the ages. It seems like I go through a trailer jack about every two years. It becomes hard to crank and sounds like the gears are shot. We trailer the boat to our site about 5 times per week. Some friends say lower the jack to keep the pressure off of the gears, others say keep it all the way up when it is back in the garage. There is no place on the trailer jack for grease so that is not the answer. I even tried to take all the pressure off of the jack and placed the trailer tongue on a block every time. That is a pain. Any thoughts?