My MANUAL sunroof leaks profusely. The front drain hoses seem to drain fine; haven't found the outlets for the back ones yet. Know where they are ?

Now - assuming I find that the rear hoses are open, is there any adjustment to this sunroof to get it to seal any better ? It isn't exactly flush on top when it's rolled shut all the way, but pretty darn close. Maybe a hair dropped at one corner, but it doesn't look like much. I didn't think this roof really "sealed" anyway - I thought it was mostly the drain hoses.

Ideas ??