GE WHDRR418 top load washer won't spin at high speed

GE WHDRR418 top load washer won't spin at high speed; the washer does the complete cycle, and agitates in both directions and does physically spin, but it will not go into the 'high speed' spin that actually spins the water out of the clothes. It spins at a relatively constant low speed after the drain pump stops--previously you could hear it ramp up to high speed and it no longers does so. I have attempted the 'reset' that was posted here: unplug for 4 min, lift the lid 20 times, then push the knob and restart the machine. Either there is a nuance to the reset that no one has posted (i.e., can only reset on wash mode, can only reset with knob specifically in or out, etc) or something else must be wrong.