Hello. I have 2004 LS with sunroof. Sunroof is leaking into front floor board and A pillars. Already took headliner down and tubes are connected. Ran a flex wire down the front tubes and made it all the way down to about where A pillar meets the hood but then flex wire stops. Tried the air compressor idea, to blow out but no luck. I think I need to get to the very end drain exit and clean it out but can't seem to find where the tubes drain?? Found the rear ones in trunk and they are good. Thanks for the help