i just changed my pin setup from 20-30-40 to 10-20-30, and all i did to do this was move my 40 up. im dead on at 10, but all of a sudden i cant hit anything at 20. i never touched it. its just that im not getting anything consistant. theyre goin everywhere. i dunno whats wrong. is it just cuz im not used to using the middle pin at that distance or what?