hey all, not sure where i should post it, but i figured here since im building one. this is my first use of gear diffs. when they are built, how smooth are they suppose to feal? last night they were horrid then today i tried shimming and trimming those ears on the flatter plastic gear section a bit, im at a point when i grab each out drive and twist in opposite directions i feel nothing, butter smooth and it still has a locker function. but when i grab the center gear and spin one outdrive im feeling something. its not a single tick like something is in between the teeth stuck or off, just a constant tiny tick.. i hope that makes sense what im saying. do i have to keep at it till the little constant tick is gone?