My rebuilt crank finally arrived today from Trabantwelt. Took almost 1 month(there was no postage anywhere on the box, so how it got here is a miracle!). I figured out the direction they go, the angle cut out goes in the same direction as it turns. Clockwise. I've noticed one of the sealing plates aren't really sealing... Must be warped. Is this kinda normal, or should I take it all back apart and somehow make it flatter?