They surely do restore them or, why the wing spar mod ?
You might have cause to regret a Robin HR100. I owned one and one day the flap deployment motor failed. Getting spares out of Robin is like asking a Yorkshireman for a loan.
The position of the motor in the a/c makes it all but inaccessible. The a/c disappeared for about two months and I received a huge bill. That, plus the bill for the Star annual as it then was removed me from the list of Robin satisfied customers. That said, the a/c was a delight to fly.