thanks nick.. by the way i didnt have a chance to get the moss out today as i spent most of the day at my mates with the plumber, but ill sort it and get it off to you first thing tommorow i've not noticed anything different, but then again i've been a right grumpy cow the last 2 weeks so maybe i'm just getting on everyones wick (more than usual)
i can`t imagine you being a "grumpy cow"