I leave my house with ride height set to highest level to clear driveway. Around 20 mph it moves to "high" (not at 10 mph as it's supposed to). At around 35 it goes to "standard" but never moves to "low" even though I have it set to move to low @ 50. I can drive 80mph and it stays @ standard. Is there a problem or am I missing something? BTW, it will go to low if I change it from the screen.