Do not forcibly rethread the pump handle. I would contact gat and see about getting those parts seperately. or just guy the autotrigger kit. from what i hear it is good. I have not installed mine yet.
that should be everything u need and if u contact them they can tell u about the threading on the rods.
I also would not say paint the rod, cuz if u are using a pump arm guide it will rub the paint off in one day.