Is it bad to use the stock keys for leveling?

I do not think they will raise enough to level it out. I just put the superlift level keys on mine yesterday and they worked out good. I need to re-aim my headlights now.
2008 GMC Sierra 2500HD Ex. Cab, Fire Red, 6.6L Duramax LMM Equipped with UTG Rocker Pods
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