On my 2000 340 Sundancer I have been noticing that the bilge has some brown water in it. It is not a lot of brown water but enough to make me begin to think that something is wrong. It would almost appear that there may be a slow leak/weeping that is coming out of the holding tank, or from some other component part in the head system, and it is collecting in the bilge. I have flushed the toilet and I have watch the system operate and I do NOT see any visible signs of leaking/weeping brown water into the bilge. Thus, I'm thinking it is a slow process... The vacu flush system is working just fine. The toilet works fine. When the water collects over a few weeks, I flush it out with a hose. I am not talking about a lot of brown water, but enough to make me want to address the "issue". This is the 1st year I've noticed this. Any thoughts/suggestions/fixes??????