Longer roller goes with the Orange (reduction) gear. The extra
length is for this reduction gear. On the opposite end you put the
drive gear (small black gear) this drives the upper gear from the
Of the two shorter ones. One is for the square wire and this should
match the lower roller (long ). The other is for the shallow U & V
grooves. Inspect the grooves & you should see it.
You may use any of the shorter rollers with the bottom Flat roller
to make Half Round. Depends on your Wire Draw Plate if you are looking
for a full half round or a shallow D.
I have posted a message for Suzanne and I cannot get through to her.
May be she is out of town.
Regards. Waiting for the Storm a big one I believe. Kenneth Singh
in New Jersey