Looking good Bob. The only thing I know of other than the usual tools for removing flash is a tool made by 'Flex-I-File'. It's a anodized aluminum frame that you attach thin strips of sand paper (plastic backed) to. The way it's designed it allows you to get into very small area's, like the headers in your kit for example. It comes in three different levels ranging from basic starter kit ($11.99) to complete set, which also includes five different sanding sticks ($25.99), all come with the anodized tool. I got mine at HL (40% off coupon!) , but , a good LHS should have them too. The company has a lot of other useful stuff as well. I know some people have scratch built the anodized frame. Here's the link:
http://www.flex-i-file.com/index.php