Here I am back again, hoping to not aggravate Forum members, with another parts question for my Lionel R27 subway set: in the photo, you can see two black philips head screws that hold down the door gearbox cover. One of them has red sealant. When my doors jammed, I unscrewed the cover to get the mechanism moving again. The screw with the sealant was so hard to unscrew I partially stripped the head. I want to order some spare screws, but in reviewing the exploded parts diagram on the Lionel website, those particular screws are not listed. The screws labeled as #14 on the #8027 car, are for the doors themselves, and much smaller than the screws I am looking for. Does anyone know the size of screw I need? I would need to know the diameter, length and thread. I realize I can try to take the measurements myself, but if someone already knows, I can avoid making mistakes in taking the measurements. Thanks in advance for your help.