Resound Custom hearing aid reshelled

Hi,

I have Resound Custom hearing aids that are out of warranty and the fit is uncomfortable due to my weight loss. I was looking to get them reshelled. My audiologist told me I had to do a remake and since they are out of warranty I need to purchase a new set???. I would go to a independent lab to get them reshelled but I need the special custom charger insert Resound makes that are custom made to fit the hearing aid shell for the charger. Any recommendations?