I just serviced my Dana44 and decided to swap out the factory cover for a Yukon heavy duty and a new LubeLocker gasket. Install and all went just fine, but when I went to fill it back up it took 2 quarts of oil and still had not reached the top hole. Is the top hole not the correct measure for full on the Yukon? Does the cover change mean the capacity of the diff is now larger? I don't want to over or under fill, and could not find exact info in any manual or online guide specific to the Yukon.