Having a problem with the slide stop lever instal on my gen 3 G27...... I can not get the slide release retaining pin out! It seems to be seized. Ive watches 4 or five videos on you tube and everyone else seems to get there pin out fairly easy..... Has anyone ran across this problem? Any suggestions? Been working at this for hours and it just won't budge..... Using punch and rubber mallet. Don't wanna end up forcing it and breaking something.