I phoned gardiners about this one last week - i bought an aquadapter but couldnt remove the resi-neck from the pole even after i took the clamp completely off. In the end i had to put the pole section in a g-clamp and pull&twist until it eventually threw me across the garden (i exaggerate).
I was told that if you dont use them as a quick release (i.e. leave them on the end) for 6 months they can get really bad. I think mine had fused to the pole it liked it so much

Anyway now i keep a few spares as they are only a few quid, but the main thing is that my neck now screws directly into the aquadapter (with a screw thread) and as i dont change my brush (ever) i have no trouble with it
