Anyone take apart a 1984 dually bed.....I started too..

[72timemachine]

and much like my 1972 long bed it too has two tack welds on each side just below the tailgate pivot brackets. It looks like those must be removed.

I have the fiberglass wheel wells off and removed 8 million bolts from all over the bed. Do you run a knife along all the seam sealer inside the bed to break the bond?

Even with all the bolts out this thing is not moving, any hidden surprises I am unaware of?

Thanks for any help you can offer.