hello everyone new to roller locks and to the forum. picked up a c308 classic bought a HK clipped and pinned 0-1-20 metal lower and correct safety switch from RTG parts to change out the navy lower. everything fit fine except one problem, on the 0-1-20 lower the safety position does not work, the trigger still fires. what am i doing wrong? did i buy the wrong lower, do i need a different triigger pack. any help would be great.