every time i put the pole in the van i coil the hose & run it through my hand & so cleaning it a bit, but i've had no problems with clamps really so i dont know what i'm doin that others aren't. also gardiners have a vid up about putting glue on the worn bit to make it up again, i just use a bit of end stop tape, that bit doesn't close fully but only by about 5mm so hardly a problem