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If you add wet clothing to the washer at the beginning of the cycle, it will most likely add more water but the manufacturer does not provide us with information on this. The way this washer senses load size is measuring the amp draw on the motor. This washer senses the load size, and composition through a series of fills and wash motion. It then adjusts the water level for the best cleaning and rinsing performance. It eliminates the guesswork. The water level is just right for every wash load size.
If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website;
Sears Home Services
Here is a link that you may use to view the parts list diagram or purchase any parts needed for your appliance;
Sears Parts Direct
I hope this is helpful. If I may be of further assistance please include more details in a reply to this post.