Setting water level on old(er) Whirlpool top load

I have a Kitchen Aid washer, circa 199.

I don’t often use the super duper max water level and when I do, I usually just close the lid and walk away.

I was doing some laundry this morning on super duper max water level and I had the lid open. I realized that the water was a few inches from the top of the tub.

I figured that there should be an adjustment so I jumped online and found a video a guy adjusting the water level of a Whirlpool by turning an adjustment screw on the water level control.

Out came the screwdriver, I flipped up the control panel only to find that there is no adjustment screw on the water level control.

Any suggestions on how I might increase my water level?

Thanks.