Ok heres the deal--- I've been using a Kellar pendelum sight and all my arrows shot the same. I just changed to a Cobra electra slide sight and upon getting in sighted in ----here are the results.....I have marked the arrows and repeated this several times so I know that it was not me. Out of 5 arrows that shot the same with the old sight------2 are dead on center and touch (the same two everytime)........2 are 3 inches left and 1 inch low and 1 is 6inches left 4 inchs low. this scenario repeats itself with the same arrows everytime. What is Wrong and what did I do by changing sights? Help??????