Mines fine mate no issues here I forgot to say I just nicked this off another site Not sure a charger should need any silicone bead following install as keep being told they are made watertight Seems Ohme long term build quality aint all that Or perhaps thats their plan
Ive seen Ohme chargers on ebay like that.
I tend to bin supplied screws and use my own and always do it to be on safe side and always have a tub of copper grease on jobs.