when i got my bow i had just a basic 2 prong arrow rest and i was instrused by the proshop to load and nock the arrow woith the odd colored fletch down, then when i swithed to a WB he told me to do the exact opposite and have the odd colored fletch directly up....i tried shooting the arrow through my WB today with the odd color down like i was told with the 2 prong rest and it shoots MUCH better but tears the fletching off 2X faster.....what am i doing wrong here?