Hi there, I have this situation too, bit also have a nice little pool of water in the bottom of my unit.  With the heavy rain that we have had in the UK recently, I have not had chance to try and dry them out.  I have also posted a topic after you, so think that either reply might help us.  I hope that we do not have to take out the whole unit though as that sounds nasty with the lack of space. :angry: