Unstoppable Coolant Leak

If you really think that your Chinese intake manifold is the problem, get a different manifold.
Even a new manifold is not that expensive.
You can spend alot of time and frustration trying to correct what you have and may never get it to stop leaking.
Bit the bullet and swap it out and be done with it.
I don't think the manifold is the problem, it's definitely exceeded my expectations. I'm leaning on it being an angle problem that's being exacerbated by being overtorqued. There's not too many intakes out there with the magnum bolt pattern but I've had my eyes on a few for a while now. If I end up needing to I have no problem with grabbing a new one.