I need the manual(or the specific Figure can solve my problem) of this model or the zr21546 thats my recondioned model the spool I have is diferent than the spool shown in my manual figure the one I have has 2 divisions with one hole each one I'm winding the string in the same direction as indicated on the top of the spool but the strings get out from the slots when I begin to cut and all the string get out from the trimmer