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This is not our first rodeo.Been pulling Rv's for 25 years and Montana's for 10 years.We never had a holding tank failure in our first 4 Rv's all different brands.We never travel with anything in our tanks execpt for maybe 1/2 full fresh water tank.We never had a fresh water tank failure.We normally leave the galley and gray tank valves open when stationary only closing them when we are going to dump our black tank.We dump the black tank every 2 or 3 days.We have been doing this since we owned Montana's prior to that we dumped when the gray/galley backed up into the sink or tub and the black when the tank was full.
We are just among the few that get defective holding tanks. Unit goes in bext week for holding tank repair/replacement We will not have another holding tank failure in a Montana.
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