I have a new Advantage Arms .22 conversion kit for my gen3 Glock 19. Everything is good except for ... it shoots consistently about 1.5"-2" higher than POA at 7 yards! This is with the adjustable rear sight at its lowest setting. Two of my friends' AA kits have the exactly same issue. Is this what to be expected with the AA kit? It is not that useful as a training tool if it shoots so much off POA .. I tried a shorter fixed glock rear sight (6.1mm), and it actually doesn't change anything. Still shooting 2" high at 7 yard distance. Anyone has the same issue? If so, what good ways have you found to correct it? I would like to make it just like my G19 - POI = POA.