The retainer lip on the clips are either bent in too far or the clip itself is. This clip just needs reshaped. If not, then be sure the follower is in correctly and not sticking....which I bet it is sticking. If this is the case, manipulating the clip body is the answer once again. And of course the spring may need replaced. You can get new springs and followers from several mail order places, Midway, Brownells, and Numrich are just a few. Numrich may have some used clips or followers/springs.

By the way....the 223 clip will work. I had one for a 222 I owned. The 788s were way underrated and are now worth several times what they cost new. Very ACCURATE.