I finally stopped relying on the dealer and fixed the popping noise myself.
It must have been that the dealership did not listen to me about tightening the brackets to 42 ft lbs. I could tell they used an impact gun on the brackets because one of screw threads were ripped off and the hole was beat up. The bracket hole must not have lined up so they made it line up.. (sarcasm) Lazy! lazy! lazy!