NC scuttle grommets

Hi First…I have just bought a 2009 Mazda MX5, my only problem is when it rains, I get a small amount of water on the passenger floor. It seems to drop down just above the fuse box. I’ve taken out the glove box compartment & then poured water on the outside & inside of the bonnet…just can’t locate where it’s getting in!
I saw you mentioned a similar problem…any advice. Thanks.
Chrisgmitch