I'm using Adobe Premiere 1.5.1 on Windows XP. I shot some video in front of a green screen recently using my Elmo and Grover puppets. Elmo is bright red and Grover is bright blue. I then imported the video in to Premiere and applied the Green Screen Key video effect to it. I am using a JPG image as the background to test the Green Screen effect. The problem I'm having is that some of the background JPG bleeds through on to Grover, but does not affect Elmo at all. On Grover, the background image appears as a very light ghost on top of him. However, if I put Elmo in to the same position as Grover is, there is no bleed through at all. Any suggestions as to how I can fix this?