I've just been re-reading my post and the responses from 2013. My DH has always taken care of the winterizing of our campers back to 1999. We have never encountered such a ridiculous set-up.
I can only presume that we have never actually owned an entry-level rig before. We have avoided Keystone products for different reasons over the years concerning quality - specifically the bouncy squeaky floors - which incidentally we now have. I am sorry that we were persuaded to bite the bullet this time around.
There are better rigs by other manufacturers in similar price ranges. On the prowl again for something different.