how to attach truglo turkey sights?

[D.R.E.]

I recently got a 11-87 from a fellow calgunner. It has truglo turkey sights on it, which give a great, fast sight picture. The one trouble is that they flip up after 4-5 slugs. I don't have the original installation instructions --- Should I use epoxy or locktite to affix them? Or is there some other way to handle this issue?

Thanks,
Dawson

[gibbygoo]

I thought I replied to this. I would like to know as well.