Bergen Intrepid Magnum Tazer, Manual, Page: 77 / 88

The tail blades grips and associated hardware must be installed in the
proper order for proper operation, note the 10mm spacer installed
BEFORE the thrust bearings. Also be sure to grease the ball cage of
the thrust bearings. One of the thrust bearing washers has a smaller
inner diameter than the other, you can identify it by placing them onto
the tail rotor hub, noting which one has more play.
Slide a tail blade grip onto the tail rotor hub, then install the 10mm
spacer, the larger ID thrust bearing washer, the greased ball cage,
then the small inner diameter thrust bearing washer. Secure the assy
with a 3X6 SHCS and 3m washer, with loctite. Do not over torque this
bolt, it is not necessary. Repeat for opposite blade grip.
You will notice about 1mm of in and out play, this is normal and
necessary, do NOT add shims to remove it.