Disassembling an A hood

[alchemy]

I'm taking apart my first 28-29 hood for cleaning and straightening. The rods in the sides are ease (relatively), but the top has me baffled.

Is that a hollow rod? Does it come out of the individual halves with just a little force? Or is it mechanically attached and won't slide out?

I realize the thing is covered with rust and that will prevent an easy disassembly, but I want to make sure I don't go hammering on something that is riveted or swedged in place.