Hi Donna, We cannot thank you enough for your inquisitive mind and determination to offer us alternative solutions in solving the problem with our 10 year old bi folding doors. Lee, your technician just called and spoken to my husband and together they have resolved the issue!! Lee’s advice, guidance and superb knowledge of your products, allowed my husband to understand what he had to do to fix the problem - amazing. We are eternally grateful to you both and if you have a reward and recognition scheme in place, we would like to nominate you both, based on excellent customer service. Once again, many thanks, Kind regards Estella and Vince Tuff