if you look at the sides of the hood as it goes over the top of the door glass, it should be flush like this:
not like this:
If that is ok check out the seal along the top of the windscreen, they are usually past their best by now, and have a good look at the top of the front door seal where it meets the hood upper seal, and also check all the hood seals.
You can sometimes tighten up the from locking handles a bit, but dont go too mad or you'll put strain on the J hooks! If you loosen off the lock nut and thread in the J hook 1 turn at a time this will pull the hood tighter to the screen. It should still be pretty easy to shut the roof though, if it takes a struggle then they're too tight
