I mostly work the Wedge
One thing about double wedge rifles is that they have a tendency to fight each other. Example, the front is firm and when you install the rear, the front goes loose. Then you shoot it and the wedges my start working out. ..
To a certain extent, you have to tune both. Now then, bending the lug is a valid option but to date, mostly resolve my problem by working the wedge. My first pass, is to work on the wedges by flexing them. You will notice that to start, they will indicate a good start point on seating, firmly. Then as
44 Dave, has mentioned, you can slot or "Key" and pin the wedge. On single wedges, I index the position of each wedge just to make sure they go back where they belong.
Recently, I acquired a BMR and it has two wedges. One was missing and can understand how it got lost. Both wedges are "keyed" but not pinned. Sadly, have not been able to find a replacement so will have to make one. When complete, you bet I will pin them. .....
Good luck and;
Be Safe !!!