Or whatever you use in the frozen north, the point is you can probably find a fresh one for less than the lbs is going to charge to tell you it's fucked
If you can find a clamp to go on the post itself to stop it sliding down (you may need to take a lip off the clamp) you can probably horribly bodge it though.
Thanks, to buy one locally would cost at least 50, the LBS will charge little to nothing if they decide it's fucked.
I warned him not to get that specific bike as the whole thing looked cobbled together but he's a cheap ass.
We'll see what the shop says as he's agreed to take it there.
Or whatever you use in the frozen north, the point is you can probably find a fresh one for less than the lbs is going to charge to tell you it's fucked