Arrived to property in Laguna Woods and customer stated that her remotes stopped working on 96' manufactured Liftmaster operator. Reprogrammed remotes, tested and working optimally. If remotes loose programming again, recommend installing external receiver. Also found during inspection bottom weather seal needs to be replaced in order to seal properly while closed. Emailed estimates for new weather seal and external receiver. Lubricated and tightened all necessary hardware, added missing tech screws to garage door, tested all safety systems and door/operator running optimally at this time minus estimated parts needed to be replaced. Next recommended tune up service December 2020.