Insert one axle into one of the axle holes on the Advancer frame, about
halfway through. Before it reaches the opposite side, slip on two rollers
and slide them a bit down the axle. Don’t feel the need to place them in
the correct groove yet: this is easier once the unit is fullyassembled.
Before proceeding, repeat the process with a second axle. Be careful so
you don’t knock the rst axle out of the holes.