prise the covers off either end,two torx bolts either end, remove and clean the rubber seals and coat with silicon or gasket sealant.

I had the same problem,taped the sunroof up and no change,it turned out to be the roof rail seals.

I had a similar problem when i tried to open bonnet it would open with brute force on the lever,after thinking about it i decided to look on the bonnet side of things and found you can adjust the length of the bonnet catch using mole grips to push the spring up and adjust the catch with a...

Had similar problem last week i thought it was front passenger wheel bearing,ended up being the front carrier bearing on vcu,as above remove prop and inspect.