Thanks for the explanation.
Here's the tip. It involves the use of cigarette filters, af which I have LOADS from when I used to smoke roll-ups!
With my 901, I just stand the atomiser on top of a filter tip (with the bridge touching the filter) for about 15 mins. This wicks all the juice out of the bridge mesh. That way you can have nice clean atomisers for trying different juices, and also be more miserly with your juice, by squeezing it all back out of the filter tip using a syringe!