Weight distribution bars different number of links

My guess is probably not with one link difference. There will obviously be a unbalanced force applied to the tongue and truck, but if it tows fine then I doubt it will permanently damage anything. It would be like having an odd number of passengers in the truck and mounting your spare to one side of the tongue.

Just my $.02

Are you hitching up on a flat level surface with the truck & trailer aligned with each other? Is the trailer level when the bars are attached?