I have the 35 as well and the only problems I have encounted is the hose that goes onto the jets kept on coming free, and the brush head kept on un-screwing itself from the pole.
The rest is perfect and I will be ordering another 18' one next week.
Is the hose coming off the jets or the 'Y' piece? With regards to the unscrewing, are you using an aluminium gooseneck? If so, a couple of wraps of insulating tape on the male screw thread of the pole will cure this.
Alex
The hse that comes away is from the Y piece to the jets, I have found this happens all the time on new brush heads, they really need o clips.
I have the plastic adapter (which snapped last week and needed replacing), the end of the pole looks like aluiminum so I will try plumbers tape, as I do not want to glue incase the adapter snaps again.