I recently came into the possession of a very nice 1919 Ithaca Flues Model 1-1/2 16ga. It swings and shoots like a dream. A problem surfaced when I went to the local gun club and shot a round of trap yesterday. I noticed that the action became increasingly stiff and sticky when opened to remove the spent round. I believe the problem is with the cocking mechanism as it opens quite smooth when the springs are compressed and ready to fire. Am I lucky enough to be able to just apply some lubricant at a stratigic point? Or, does this warrant a visit to the local gunsmith where some complex dissasembly is required? Thank you for any and all helpful hints and opinions.