you may have more success if you take screw out compleatly ,slide sight out backwards as some have grouves in them ,and see if it will slide back in lower ,or failing that if hole is elongated enough file a little bit off the bottom. norm
There is not enough darkness in all the world to put out the light of even one small candle----Robert Alden . If it wern't entertaining, I wouldn't keep coming back.------the BigSky
