Recently was able to get my hands on two pre-war lionel engines, and wanted to know about riveting. Never had any experience with this sort of thing. First is it hard to remove existing rivets, and how hard is it to put new rivets in? Just have one to replace, or is it best to just leave it alone. Both engines are in good working order, but would like to spruce them up a little. Any help would be greatly appreciated with any aspect of their appearance. Thanks.