It's hard to tell on that one without actually seeing it, but you may have an axle that is slightly binding up due to the increased angle. Did you also replace the axles, or are you still trying to run stock?
Take the lift off. What type of riding do you do and what tires do you have? If you don't do any aggressive climbing or mudding you could get away with a cheaper axle like cobra, rhino, or highlifter DHT. They can withstand better than stock, but not as good as gorilla or turner. I always recommend going with gorilla or turner when installing the lift though to save money and headache from broken axles down the road.
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