IM TRYING TO GET LITTLE BIT LIGHTER 2ND STAGE LET OFF ON MY AIR RANGER. I GOT THE MAUAL AND DONT UNDERSTAND WHERE IS SAYS LOOSEN 1ST ADJUSTMENT IT ADJUSTS 2ND STAGE WEIGHT BUT I DONT SEE A LOCKING SCREW I HAVE A 1.5 ALLEN KEY . MAYBE IM MISSING SOMWTHING LOL PLEASE HELP