Fireplace insert blower auto shutoff not working and damper rod vibrating
I bought a Hampton Fireplace insert about 6 years ago and had it installed in my fireplace that until then, had glass doors. The insert has worked wonderfully in my house except for two things: 1) the damper rod vibrates and it constantly needs to be adjusted in order to quiet it down. It's very annoying. 2) the blower works fine but it doesn't shut off anymore when you let it die down when going to bed... so I have to manually shut it off now.
I called a repair place who said I needed to pay them $85 just for coming to the house. Then it's $85/hour after that. They came and here's what they said:
They said I need to reline the chimney. The insert vent is "crushed" and I need a new blower and need to have the chimney relined... just relining the chimney is $2250.
I don't believe any of this! My previous fireplace worked fine! The fireplace insert worked fine except for the two issues above. Can someone offer me any explanations? My house is well built and was built by experts in the field (not by me, but I'm the second owner, owning it 8 out of the 11 years)... I can't believe my chimney needs to be relined. Is there any other advise out there? Thanks for any help you can provide.