I wonder if a little Kroil or some good penetrating oil might help that trigger pivot. The pin moving with the trigger doesn't sound right to me but I've never actually watched it to see if mine rotate or not.
I'd definitely try the oil before trying to remove that pin.
Greg has successfully removed that pin more than once, I know what's involved and read his how too's but I'm still plumb skeered to go there and I've done a few skeery things wrenching on guns.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."