Had my Mh for just over a year now,about 6 months ago a slight water leak coming through the ceiling,traced it to the television ariel on the roof (not fitted by me) removed the ariel cleaned up the area and siliconed it back down,was okay for a couple of months then started leaking again,removed it and found some of the silicone had not set(think I had used too much) redone it using much less, and has been fine, till went in there yesterday,leaking again (it has been raining a lot past few days) any suggestions?