Well,

I took an older shrink tube/Shrink wrap gun. It produces the same amount of heat as say a paint stripping gun.

I worked the entire area with the heat not allowing the gun to warm one spot to quickly or too much.

After about 4 tries I had the thing completely fixed. When we moved into this house the corners were never perfect but now they are.

I should have thought of this myself after trying the blow dryer, and steamer, this is the next logical step.

I used a pair of grip gloves with the rubber coating on the fingertips and palms for extra grip.

Personally I would suggest a partner for this as its pretty difficult to get the liner up and held all the while hammering in a penny or two. I went as far as using a few nickels.

I am going to get it filled and then run some beadsaver product around to replace the change.