Thank you for the replies. I will take another look at the gun later this week with your comments/suggestions in mind.
From yesterday's inspection I am sure that the trigger group is not dirty.
It takes a great deal of pressure to move the safety slide forward to remove the trigger group. Far more pressure than I can apply with just my thumb.
When I install the trigger group I do to hear/feel the lock engage.
As I mentioned this gun was purchased used so I do not know if this is the original trigger group.
Thanks again for the replies.
Dennis
