Power Valve on 8BA with Holley 94

[Robert Legner]

I checked the oil after the car sat for a few weeks and found the oil level higher on the oil stick. I ran the car then removed the top of the carbuerter and found the fuel level low in the float chamber only a few hours after the car was ran. It would seem the power valve is leaking down the throat of the carb. There are several power valves to buy depending on the inches of vacuum, supposedly if the vacuum is 20 then the PV should be a 10. The vacuum on this car is 8 inches with the PVC system connected to the vacuum port. With the PVC disconnected the vacuum runs at 16 inches. The 8BA is stock. It is difficult to set the idle with a leaky Power Valve, and when starting it cold I need to crank the engine until the fuel pump fills the float chamber before the choke will give it more fuel. So what is the advice I can get to solve my problem.
Thank you in advance!!!

Bob