As far as that leak, I'd take the cannister off, take the tape off and make a permanent seal on the threads with weld or similar and just consider THAT cannister to be sacrificial at that point and replace the can when the membrane needs to be replaced.
i need help...I plugged this in before the sediment. I got lower psi than directly plugging in to the faucet. All it did was brown out my sediment filter in minutes cuz of low psi. What did I do wrong?