I have called every possible place that could carry 5/8 chain in Tulsa, and after exhausting that avenue, I just went to the home depot, and bought 50 feet of 3/8 inch chain. Using 3 five foot lengths of 3/8 chain is roughly equal in weight to using 5/8 chain, and it was not terribly expensive.
If I am a good boy, I am hoping I will get some more chain or maybe the blue bands for father's day.
B