Out of spec - CMC Triggers Complete Lower Receiver Parts Kit for AR-15

I bought two these for client builds and both arrive with mag catches way out of spec that would not work at all. The tolerance was way off and the threaded post was bent in both. Also one of the bolt releases was also out of spec and would not fit in the notch in the lower. Both lowers are aero gen 2.I needed to get these builds finished and had to use other parts to get it all done in time and had to use some of the parts from this lpk. Unfortunately this means I can return just the mag catches and the one bolt release because i don't have the complete lpk set and optics planet will only take it back as a complete kit. I can't get the parts back from the client rifles and there was no way I was going to uninstall everything that was already put in. The prices is cheap, so are the components. I had no trouble with any of the other parts except the safety is a bit stiff. I wouldn't buy this again and I wish optics planet would at least work with me to get the parts that were out of spec fixed. But it looks like ill just be eating that cost instead.