The JK/JKU "Watertight" gasket system is the most complex I've ever seen-
Don't believeit when I say "Complex"-just look at the upper door corners--the "T" top seals are "formed" with protrusions and gulleys--the door seals are "formed" with ridges and overbearing foam points--
If any of these aren't in pressing contact--BINGO-water redirects inside the door edges and runs down "INSIDE" instead of outside-
Take a look at the hardtop rear window seal-looks like a gasket designed for the space shuttle--look what happened to that one !!
A lot of time by moving the TOP front door hinges in 1/8" can alleviate whistling and water leak-sometimes not !!
As mentioned the drain plugs--aren't the best, but if you just removem-water will splash/seep UP from underneath and you'll get the "Wet carpet" syndrom !
These new jeeps are SO MUCH FUN !!
Keep yer powder dry !