I have been working on my 81 CJ-7 over the winter to swap out the stock axles and install Dana 44's w/ rear disc brakes. Over the course of the winter I have periodically started her up and let her run and she idles fine. I recently finished the conversion and took her out for a spin. While I was testing the brakes I was lacking power. There is a whistling coming from the carb when I give her gas and when I got back from the ride there was milky oil sprayed against the top of the air cleaner and inside the carb. The previous owner installed a holley double barrel carb in it. Any suggestions?