I've got a year 2000 2460 Regal and the head bubbles after
I pump flush it and that really wouldn't bother me much but
I get the feeling it's coming the gray tank and causing it
to smell. Only liquid wastes in our tank, pumped out twice
at the end of the weekend and a bottle of the purple stuff
added, used the next weekend and then pumped out again, so
I don't think the head should smell. I flush dry, then
water flush, then dry flush it again.

What is causing the bubbling? The vent on the gray tank
appears to work fine. When I do a rinse on it, I know its
full when it pours out the vent. It doesn't pump hard. I
don't think it bubbled when I first got it.

Thank you, Michael