Hi, I have attached the two videos that we made for you yesterday for the benefit of not just yourself but others too who may have similar queries. The videos show that there is very little resistance, it is completely in line with what we would expect to see on this type of motor. Our usual policy is that we would cover the cost of returning goods to you if they are found to be faulty, but if no fault is found, we ask that the customer covers this cost. We have inspected your unit, and also opened it up and greased it, all at no additional cost to yourself. We will, in this instance, also return the unit to you at our cost.