I've got a DMC thats cycling it's doors at the 1st and 3rd floor. HW relays pick and DCL goes high then the door immediately opens. The door hits DOL then starts closing again. It has the old blue door board. This car has hoistway mounted directional and slowdown swithces, no selector. EE and SE are staying high. If I give it a car call it will leave the floor. I've seen it do it at the top and bottom floor but not at the intermediate floor. It is a 3-stop front only. The blue door board has an extra band with magnet on it I think for center of travel. I'm leaning towards a bad board but it doesn't do it at the 2nd landing.