Hi guys, we are getting our bracket car back out after sitting for a few years since my dads passing. We installed a vacuum pump(moroso 22640) on the engine and have discovered that the pump works and is pulling vacuum but it appears the engine is not sealed up as well as it should be for pulling vacuum. My question is where are the typical problem areas that you guys have run into where BBM's struggle to seal most. We want address these issues so we can get the engine sealed up. We plan to pressurize the crankcase and check for leaks but haven't quite gotten that done yet. Any help is appreciated. Thanks