Another thing to note about traditions .
If you have not taken the tang screw out , you might want to loosen that alittle .
The reason I say that is that I have had traditions guns that had a small lip on the standing tree “part the barrel hooks into “
When the tang screw is tightened down , that lip can catch the lock and hold it tight
Also as mehavey mentioned . If you have not lifted the barrel out , I would . This will reduce the pressure on the lock as well .
A little careful wiggling and the lock should pop out