hood tin canning

[pdxhall]

I've got a hood on my truck that has gone through some serious changes. The top and most of the 2 sides are original The front and rear inner braces have been changed and the front seam has bee welded in using half the original and the bottom half donor. I've got the hood on the truck and aligned. I have a couple of canning spots on each side of top on the panels just on the other side of the raised spear everything else is solid, minor dings, and is about ready to get some more epoxy sprayed. I've been doing some work on it trying to get them to go away but these small areas are stubborn. What can I do? Is a shrinking disk appropriate. I have never used one.