it has nothing to do with the fact that you have quads. it has more to do with the fact that you don't know what type of range you're trying to extract value from and the fact that you OMG have quads and you're probably freaking out that you've got the nuts. this isn't any different than how you would extract value from a hand lesser than quads. i highly suggest you take the time to reevaluate how you play all hands in this spot and it shouldn't be drastically different between 55, 56, A5, and AA here. you need to get past what cards you have and consider what cards your opponent has and think critically about what you're going to do with this information.