You could try a few things to fix that instead of giving up on the rest.
1. Drop of glue on the tip of your vanes
2. You may have major tuning issues
3. Go to plan C for refletching<img src=icon_smile_wink.gif border=0 align=middle>

Stock vanes that are on arrows when you purchase them are always the first to go. If you have your arrows fletched by a good proshop and put a dab of glue on the tips , you shouldn't have any problems. If you do still have problems I would say you have tuning issues and or spine issues.