husband had some trouble with the garage door, and couldn't figure out exactly how to troubleshoot it, since I have temporarily misplaced the manual that came with the new door.  He called and left a message after hours for Art.  This morning, before 8:00 a.m., Art called and left a message.  I called and set up an appointment today for a 'tune-up,' as my husband wanted to be sure we wouldn't have any problems in the future. Art and his son came out and inspected everything.  At the time of the call, Art had told me it would be an $85 charge for the tune-up.  Once on the premises, I, of course, couldn't remember everything my husband said had happened with the door the night before, so at Art's request, I called my husband at work, and he gave Art the necessary info.  When Art couldn't pinpoint any problem, and with the garage door now working fine, and although I was prepared to write a check for $85, he charged me $5 cash (all I happened to have in my wallet today) for the lubing he'd done on the door.  How AMAZING is that?  What other business do you know of that would do something like that?  Obviously (given the length of this review) I can't say enough good things about Art and Up & Down Garage Doors!  It is so absolutely REFRESHING in this day and age of rip-off artists, both large and small, to find an ethical company