The Pilot is my first vehicle with a power seat function and I am the only person to drive it. Having said that, I like to drive with the seat adjusted up as high as it will go. Every few days I'm finding I need to raise it back up again as it seems to lower a little each day. The more time that passes, the more it needs to be raised. I'm not a heavy person either if that has anything to do with it. Is this normal with power seats?