If your wedge pin is loose then your barrel is hard against your stock. Bending either the pinor the lug will increase that contact even more. I have a different suggestion.
My GM barrel seats in the tang of my Hawken (after some metal removal)such that when I go to insert the wedge pin I have to gently squeeze the barrel and fore endto fit the pin. With the pin in place, if I squeeze the barrel to the fore endwith the gun on its side, the pin will drop out. In essence, the barrel is "floated" by the hook in the tang.
Don't remove metal, instead, try placing a thin shim against the bottom of the tang thenhook in the barrel, and when you lower it into the stock the shim will cause an increase in the gap between the barrel and the fore end. Squeeze gently and insert the pin. You'll have a barrel floated by the shim. You could affix the shim with hot melt glue if you wish.
Then again, you may decide to bend something. Not everyone is concerned with accuracy.