Genoa car springs

Alan Leslie

I need to replace the springs in one of my Antal genoa cars.
The springs and block are attached to the car by a stainless rod that runs from fwd to aft and is dead ended at the aft end.
There is a split pin through a hole in the rod to prevent the rod from coming out.
I can't turn the rod to get the split pin out...and even if I could I doubt that I could get the rod out.
Has anyone done this before?
Any advice on how to remove that rod ?
Elyse SM437 

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