Using your trouble-shooting aid, I found the bolt and washer under the fabric softner dispenser were loose and the rubber washer worn excessively. Ordered replacements and installed them. But, after running the machine found the bolt and washer loose again. Discovered that the spline inside the agitator and on the drive shaft were corroded and eroded and slipping. Opting to replace the washer versus replacing the drive assy. and agitator in spite of the fact the washer is only 3 years old..