so i got my controller a couple of weeks ago. the blue led was super bright. i was using the microsoft rechargable battery packs. all of a sudden the led just went really dim. i figured it was the battery pack. so i spent 17 dollars on brand new batteries and the led is still super dim. i dont like it at all. plus when im using rapid fire it blinks with every shot like its going dead or somethin. ive tried multiple batteries and ive charged the battery packs completely. please help.