Peugeot 406 r plate ariel ... instructions to re tighten?

inside the car below where the areil sits take the cover of should just pop of then you can see the bolt for the areil should be a 10mm socket your best bit would to take it right out and clean round whrer the ariel sits then use a little clear sealent then put the ariel back in place get some one to hold it in place then retighen it up and that should work hope this helps