I just received my injector from Ebay today but it is very dirty to use. This post helped me out tremendously in cleaning the razor: http://badgerandblade.com/vb/showthread.php?t=322 , but my problem is there is a blade already in the razor. How can I clean that part? The only way to get rid of the blade is to load a new one which means that area will still be dirty. Can anyone help with this?