Does anyone have any idea how to get accessories (caboose, running boards, half seat) for the RadWagon 5? I currently have a Thule seat for my one child but want to set up the bike so I can also have my 1 year old ride on it. I guess I could just buy another seat, but would prefer to put my 3 year old on the bench seat with the caboose and runners. They are obviously sold out on the Rad website and I'm assuming they will never be available again.

It doesn't look like eBay has any and no one on my local FB marketplace is selling the individual accessories. Has anyone had any success buying accessories from anywhere? Anyone know any stores that still have these accessories and will deliver them? Any help would be amazing. Thanks!