Model Forum / Radio Controlled / Helicopters / February 2006

I'm rebuilding the blade grips on a ZXX with stock pieces. The instruction
drawings, working from the inner portion out, show a ball bearing, a thrust
collar, a thrust race, the thrust bearing, another thrust race, and finally,
another ball bearing. My question centers around the thrust collar. If I
place the flat side of the thrust collar against the first thrust race and
bolt it all together there is zero play axially within the blade grip, but
axially it is very tight. However, if I flip the thrust collar over, and to
what seems logical, have the recessed side of the thrust collar seated
against the first thrust race and bolt it together again, there is seemingly
10 to 20 thousandths axial play in the grip. The drawing is not overly clear
on this, but seems to show, counterintuitively, the flat portion of the
thrust collar against the first thrust race.

Would like to know which way it's supposed to go.

TIA,

Jack