Originally Posted by RGMN

Usually you can see the crack, sometimes you need to flex the carrier a little to see if a crack opens. Usually they are obvious
Noticed how they wound up the coil spring with the spring coiling bushing before putting on the retention cover? More than once I've seen someone wind up the spring too much, usually because they missed the first spot the flats will drop in. I've done it too. It only takes about a 1/4 turn, just enough to put some tension on the coil spring.
The Ergopower rebuild instructions are attached.