On our 2014 3300ML is brand new. Never been used even though a 2014 model. We are about to take it on a short shake down cruise this coming week. There are two clear short 1/2 " plastic tubes hanging down underneath the coach. They are about 8 - 10' long and there is one on each side about midway along the coach body. One is right under the steps and the another more or less across from it on the other side. They do not have an on / off valve and are in addition to the low point and other drain valves. Today I noticed a cup or two of water drain from one when I was parking the trailer. Can't find any reference to them in the owners manual. Anyone know what these are for?