Lubrication during assembly
When you get your tranny back from me, the curious like to peek inside. You’ll see a fair amount of lubricants used both to assemble the tranny and to prep the assembly for your installation.
I’ve found that problems can happen when too little or not enough lubricant is used in the assembly. When you are installing the shifter, you’ll want to be able to shift through the gears, and they could lock up if they are dry. This will cause the synchro ring to lock onto the cone of the gear. Not good.
Too much lube can prevent the gear lube from coating the gears under performance, so prudence in appling assembly lube is the order of the day.