OK quit the nonsense, call Kyle and tell him what the problem is.
The simple answer is the housing needs to go back to ATP to have a machinist surface the bolt holes so a nut can fit in place. The housing was rushed and not finished properly, simple as that.
If ATP cannot do that for you ask Kyle if he can. If not, ask for a part refund on the housing and keep it OR buy the uber expensive GCG alternative. If you get a refund on the dud housing and get to keep it, you can find a place that can do the machine work for you, but don't be conned into going to that level UNLESS you have received some form of refund.
The comment about sending someone to China is absolutely correct.