I contacted Ron due to a friend's non-working Roo scooter. But as it turned out there was nothing wrong with it. The friend, who loves the scooter, had gone over a big bump and merely dislodged the battery. He paid for a scooter technician to come and repair it. The tech disassembled it but could find nothing and left without any results. After I contacted Ron, he asked a few questions and, long distance, determined the battery may not have been inserted properly. That was exactly right! I was impressed by his precise analysis but actually there was no problem. I was more impressed with the attentive and lightning quick service. Where can you find that nowadays? At Zip'r