We have an above ground pool that is sunk into the ground about 2 feet. Its over 20 years old and on the third liner. I noticed this year that one end of the pool has actually risen about 4 inches higher than the rest of the pool. Our soil in these parts is largely clay and we've been rather dry the last few summers. Save draing the pool and removing the liner and starting again, is there any way to get this high end down lower where it needs to be?