I need some help with the 2 part coupling that connects the sprayer to the bottom of the faucet. It has a set screw on the side, a brass part that screws onto the bottom of the faucet, the part with the set screw connects to that, and then a compression fitting the screws the opposite direction into that. That piece holds the end of the hose. I'm trying to get help or video of this so I can tighten the parts properly to stop leakage. I can find no video about tis faucet or couplings.