I am seeing two different diameter pushrods in Vac. Both same length @ 11-5/16". Smaller rod (earlier?)is 1/4" dia, with a slightly larger cup @ the adjustment screw and a knob on the lifter end. Larger rod (later?) is 5/16" w/o the lifter end knob.
Yes the rkr arm is two piece.
Don't know what you can do with the lizard. They make great black bass bait.