water coming in through sun visor, how to clear drains?

Yeah you might want to look into getting that piece of weather stripping straightened out renewed replaced that sort of thing I have not cleared the sunroof drains on a generation 3 but in the late '80s and early '90s I had lots of Toyotas with sunroofs generally at each corner of the sunroof there's a little hole that's attached to a tube that runs down the front A pillars I think that's the right terminology and basically goes to the area where the front fender bolts just ahead of the door with the 10 mm coming up through the bottom of the fender and then in the rear they dump out somewhere near the rear quarter panels I think. In older cars these things were about a quarter inch or a little larger maybe almost 5/16 tubing You could literally take a coat hanger straightened or a long piece of wire straightened and push it through the sunroof drain until you would hear it when it came out the other end of the tube where the water supposed to go You could actually jiggle the wire up and down and hear it touching and then you could pour a little water in there and gently apply low pressure air say 5 to 10 PSI and sometimes you would hear a splat where the crap you just pushed through the tube with the air and the piece of wire the Air Force it to splat against where the water normally goes now you can run some more water through and it'll clear the dirt and crap that just hit the body panel coming out of the tube and you'll do the other for the same way that water should be running down those drains quite quickly kind of like a gutter system on a house if you will so maybe even with that plastic deteriorating if the drains were fast and working properly the water might be able to get down the tubes without getting on you but if you're moving forward with great speed like 60 miles an hour that may be a little tricky that piece of plastic trim on top of the sunroof forward of the sunroof may need to not be compromised and good luck