Ok guys, finally was able to take a look at it. I drained about 2.5 cups of water out of the drain! I used compressed air to blow the rubber hose through the firewall and I used electrical tape and taped about 5 zip ties together to make a flexible shaft. As soon as I pushed it in the drain it was a flood of water! I tried to use compressed air in the drain but it's such a tight fit I don't know how effective it was. Now I am wondering what was blocking it and how long until it comes back? I can't really flush it out. What do you guys think? Should I keep an eye on it or am I good for another 20 years?