I want to remove the Gobi rack that PO installed. The rack uses stainless bolts so I need to replace them with stock torx. My question is, are these the same size as the door hinge screws? They seem to be cheaper than the window screws but they appear to be the same. Also where is a good source to get touch up paint for the new screws? Dumb question but I only want to buy them once and get it right.