i just looked and on my 1200 the cob stacker chain is a 45 usually the local hardware ( at least around here) should carry it on hand...as far as the little slats/paddles whatever you may call them i have not found anything quite like them at any hardware or welding shop but i think i stumbled across some old feed conveyors that use that same style of paddle
Like they said a Farm and Fleet, or Theisen's would have chain for the drive. I have NOS. COB trough 16B4125, lower cast bracket 16A13021, complete chain 16A11939 , Bevel Gear42 teeth 1834C, Yoke for the pivot 4227C gear double bevel 26 and 48 teeth 4213C plus other stuff all new. 319-444-2284 Luzerne, Iowa David Lohf