Originally Posted by rm -rf

Yeah, that video is hard to see. This version is much better-- the correct speed and clear, too.

The two G springs are the same for the back shifter. (the front shifter springs are reversed)
Check for a split in the G spring aluminum carrier-- it'll be noticeable if it's cracked.

Hooking the thumb shifter plate onto it's spring and rotating it into place is the trickiest move in the reassembly.

One more comment -- don't glop a lot of grease on all the assembly components-- it makes the shifting too slow.