Any one had issues getting the Pure freedom kit to work. We recently bought a trolley system, but the control is constantly showing DE (Dead end). There is no dead end and to get it actually working we're having to ramp it up to 99 to get it going..... we then birng it donw to what we want to be working at.... (20) and it cuts out. DE again. Anyone else had this problem? Longest we had it working was about 5 minutes @ 30, but then it cut out! When we're cleaning from the vans we have the flow control set at 20 and it goes all day..... Any ideas?????