while digging for some bits in the parts stash for my [future] panel, I ran across
the set of NOS rods I picked up a while back, and remembered this thread -
as it sounds like you don't have the rods at all, FYI the dimensions are as follows:
short one is 19 1/8"
long one is 24 1/4"
both are 5/8" diameter and threaded 1 1/2" up 10-24
and the rounded slotted heads are 1/2" across with a rounded countersunk body - there's also a rubber antirattle bushing that fits the end closely
hope this helps!
Bill