How will you clean a gallon of creosote out of the bottom leg of the tee with the foot of liner and cap on it every time you sweep?
If you resolve that (perhaps by dropping liner all the way down and capping it in the basement), you still have a short flue with an uninsulated liner.
Gonna have to agree with bholler.... you're best off with a do-over if you can get your money back.
I think we'll need to vacuum it out, though I agree it'd be better if it went down further.
I would love to go back in time and do it right, but we made a bad decision. I don't see us getting our money back. We paid $1800, and the liner itself was about $700. Really think we're going to have to find a way to cap the liner...