Hello. If you're looking for parts for your Cushman, eBay is the best place I have found. There's a golf cart dealer that often sells parts for Cushans on eBay (he is in Alabama). I don't know the name of his business but I dealt with him a couple of years ago and see him frequently advertise parts for Cushmans on eBay, he has everything, new and used. You will just have to do a search on eBay. Type in Cushman or Cushman truckster and skim through there you will come across him sometime. I think his username is "batpilc".
I wish I could be more helpful. Good luck.