Next, for CP-8400 users only, set the carrousel position. You may have to
switch back and forth between the tower and carrousel one or more times to
determine the optimum rotational positions. Finally, adjust the Syringe sled
height so that the needle guide is just barely above the vial cap. You should
be able to see about a paper’s thickness of space between the needle guide
and the top of the vial cap. The penetration depth into the vial is measured
from the bottom of the needle guide, so this height will give you optimum
penetration depth.