For future reference, I managed to bend one of the links out on the end of my CL600 loader on 2011 Yanmar and got a replacement link from Yanmar with no problem. Since the Cub EX series IS a Yanmar, I'd think it would be no problem to get parts.
Thanks for the additional information, TnAndy. Unfortunately, the EX3200 I was looking at is no longer for sale. But this information and the information in the EX3200 HST thread will be very helpful should another come up for sale.