My garage door had not been serviced for several years and I wanted a tune-up done. In addition, I was concerned about the chain slapping back and forth and making noise when the door was raised…I was afraid I might have a bigger issue than just a tune-up. Tim came out as scheduled. He pointed out the problem with the chain…basically, it was acting the way it was because its point of contact above the box had not been lubricated in quite some time. He then explained the garage door mechanism/system and showed me what parts should be lubricated on a yearly basis. Tim was wonderful…I would use him again