I too have all new parts including a new Strange case...but I can turn it fine by hand. It spins very freely.
Yes, it's mandatory to replace the crush sleeve everytime. The easiest way is to just buy a solid crush sleeve or sometimes called a solid bearing spacer to use. Then you can reuse it because it doesn't crush.
Northwood: What was your backlash? Also, are the gears covered with gear
oil when you turn them? That could make a difference too...