How to remove the Dodge 230 Flathead 6 Fluid drive dust/dirt cover, I removed 8 bolts that I found two 7/16 and six 1/2 inch bolts but it will not come off, do I need to pull the engine , I want to inspect the flywheel, have a tool used for turning it, engine sat for awhile and need to spin the crankshaft. The engine and trans are still in the car.