Sink pblm
Out for second time w 2002 montana. All of a sudden kit sink wont drain. Hooked to city water, grey tank drained. Didnt put anything sjgnuficant down drain. Took trap off, no pblm there. On tank monit...
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Yup, you have three tanks. Go outside and start looking. You should find two handles close together and a third handle farther back. On my fiver it is just ahead of the front wheel under the slide out.
