I don't know why I'm having so much trouble with locking pins for my hitch, but I am. When I picked up my trailer, the hitch release lever was secured with a cotter pin and ring. I've been looking for a locking pin, but everyone I've tried is too large to fit through the hole. Additionally, I'm having issues finding a hitch receiver that will lock the hitch to the TV. I've tried several, but they all seem to be about 1/8 inch too short. This is probably a problem with my TV receiver. So what I'm looking for are links to products that have worked for others.