well, we own 3 of the "742 woodsmasters" right this time.......... and have had numerous others , even one we redid after our house burned down back in 79, I never have heard of such a problem myself, Mark.....
only thing I could suggest is have a reputable GunSmith look at it and give you a price if it is fixable........ or if it is not..........
the one we had that burned, exploded all the ammo in the clip ( think it was 5 rounds ) and it bowed it out, but after we sanded, re-blued it, and fixed the clip holding area...... it still fired true as the day it was bought.. that specific gun had sentimental value, I took my first white tail with it when I was like 9......... so anyhows......
doubt this helps........ but I say check with a GunSmith
TC ( Good Luck )