Hastings tail wheel

Hi All,
We are looking for a Hastings tail wheel, this is the type fitted to NX611 and PA474 (before the Airbus nose wheel).
This is for a spare for NX611.
Part number is AH8291 or AH7284.
If anyone has one for sale please let us know on here or [email]andrew@lincsaviation.co.uk[/email]