Stillen Gen3 Intake, Berk Hi-flow cat, and Stillen cat-back exhaust

thispecialk

Just got Stillen exhaust put in and I heard a clanking noise after driving like 3 minutes maybe 5 please help o yea the instruction said move silent damper from oem to new Stillen exhaust and the instruction mentioned that there is 4 silent damper but the mechainc said only 2 where found? does anyone have a picture of the silent damper so i can make sure that was the mechanic pointed to was the silent damper. and also when i was parking my car i look out the passenger window and saw smoke is this normal in the begining?