Guy replied and confirmed there are models with and without the seat slider and will send another one out.
He said it's not very hard to swap over the seat but he would rather send another chair, not looking forward to separating the chair from the gas cylinder, it was a nightmare last time.
He said it's not very hard to swap over the seat but he would rather send another chair, not looking forward to separating the chair from the gas cylinder, it was a nightmare last time.