After learning a bit more about finding older style chain rings, I hope to stay with the old Zeus crankset and just try to find a ring smaller than 44t for the small ring. The Zeus is kind of an odd size, and the adjacent bolt holes are 69.7 mm as close as I can come with my Harbor Freight digital caliper. According to Sheldon's chart the closest is 69.4mm, that corresponds to a 118 BCD ring. His chart does not mention Zeus, but only SR and Ofmega. I was wondering if anyone has an idea if Zeus in fact did use a 118mm BCD. I was surprised to find a 39 tooth SR on Ebay which looks very good. I'm just a little leery about buying it, if it does not fit I'm stuck.