Tried to staple myself but the seat base isn't flat like most, have a look and you see the staples in a 5-10mm recess. I just couldn't get my gun in there. So dropped my semi-stapled seat off at upholsterer and they finished the job for $20.
Happy to post more pics just flat out moving house for the next few days, but will after. I posted a few earlier but it was very poor light.
Matt.