I HAVE A DUMB QUESTION....I'M LOST I GOT THE BATTERY TRAY FROM MIKE TODAY...I HAVE NO CLUE HOW TO ATTACH THE TRAY...I HAVE TO DRILL...OR DO I MATCH IT UP TO SOMETHING......THE TRAY HAS A RASIED AND A LOWERED AREA...HOW DO I MATCH IT UP...SORRY I JUST BIT OFF MORE THAN I CAN CHEW..