Red Sox prospects such as Hanley Ramirez and Jon Papelbon may be on the move soon to fix some of the holes, particularly in the bullpen. ``This is difficult to fix, to be honest with you,'' a calm and controlled Theo Epstein said yesterday at Wrigley Field, where the spiraling Red Sox lost, 7-6, to the Chicago Cubs [stats, schedule]. ``So many people are performing below our expectations and below our projections that this isn't easy to fix. If this is the best that this pitching staff can pitch, then I really miscalculated and it's time for changes. ``This is my fault. The guys have to play better or we've got to make some changes. I think we've allowed something like (77) runs in our last 10 losses. We're out of games. It's time for changes. Soon.''