Vids guide cabinet repair worth a review.

Shane

post a picture

Have you tried Paul Drabik? Maybe he can help.

wannapinball.com

paintpins Does great cabinet restoration work

I have had too fix this kind of thing many times but when I do that the machine is all apart and right down too the wood too fix it I am not sure in this case with out recking the decals somehow u need too take the one leg off and the inside bracket for the leg then use 2 bar clamps with something on the ends so it doesn't reck the decals on both ends its a tricky thing too do but bit by bit it will get there ,might have too get someone that knows how too do it

I've seen this suggestion pop up for cab seam repairs:

https://www.harborfreight.com/1-inch-x-15-ft-ratcheting-band-clamp-66220.html

Then maybe just put something soft between the corner blocks and the decals.

I have tryed them before on cabs and they don't really work in this case there will be stuff like old clue and some wood inside the jount that most times takes more force too get back together I have leaned over the years restoring them never goes easy ,I have never done one with the decals on so I wouldn't know way easier with no decals then u can fix the marks in the wood you make