"VST = Vapor separator tank. I
"VST = Vapor separator tank. It's the small tank that the gas line goes into before the HP filter. I'm traveling, so do not have shop manual with me. Typically the VST has a small plastic tube coming out of it that is designed to go into a container. Right next to the base where the tube comes out, there is a small set screw. Opening the set screw allows the pressure in the VST to push out the fuel/water that has accumulated in the bottom of vapor separator tank. BE VERY CAREFUL to not unscrew the set screw too far - it's a major pain to get back in.
Back to your original problem...
1. Are you sure your fuel tank is breathing properly? Loosen the fuel tank filler, and see if that helps. If so, your tank breather line is clogged.
2. When engine starts to cut out/miss, check the fuel pump-up bulb and see if it is going flat - if so, either the fuel pick up in the tank is clogged, or the check valve in the bulb is stuck.
3. Bypass the fuel line at the low pressure filter with a clear plastic line, run the engine until it starts cutting out and observe if there are any air bubbles coming through.
4. If all that fails, you will need to get the engine to a Honda dealer and have him plug in the HDS to determine what error codes are being put out by the ECM. It's possible that your ECM is failing."