I'm trying to reassemble my slingfire but even when I have the gears aligned right it gets all kind of fucked up trying to prime it
https://files.catbox.moe/y3fkuk.mp4is it because I'm missing the second orange ring that's supposed to go on top of the middle gear and in that circular indent in the second pic to stabilize it? am I just fucked if I don't have that piece?