When I recently attempted to remove the trigger group of my M1A for cleaning, the trigger guard rotated about half way and stopped. I didn't want to force it so I did an internet search and I found that the roll pin for the magazine latch will drift and cause the jam. This is in fact what has occurred with my rifle. The recommended solution is to move the pin back to where it belongs. However, there is not a lot of room to work in there and the pin seems to be snug (as it should be but obviously not snug enough). Does anyone have a suggestion before I consider a gunsmith?