Harry:
I have an '05 2955. Have fought this issue since new myself. The galley drains slow, but it does drain. Black tank drains with plenty of force, but I have a different issue. I can flush the black tank until I'm blue in the face. When I get home, I park the Monty in front of my house which is on an incline uphill. I put the curbside wheels on the sidewalk. If I hook up the flusher and drain into my now designated "black bucket", I can flush out a considerable amount of waste yet that I have to cart into the house and flush down the toilet. I asked the dealer more than a couple of times, and even posted it on this forum a couple of times, but have had nothing new in advice other than the usual fixes. So, I live with it and always flush this way just for peace of mind. I was going to buy
a macerator (sp.?) but my run from the RV to the toilet in the house is quite a bit further than their rated length.
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