Some of you are self-confessed fans of Biopace (we all have our problems), so I'm going to help you out with yours...FREE for the cost of shipping:
3 Biopace steel chainrings (from a DB Mtn. bike RSX crank), these are Mark II profile, have ramps and stuff for "better" shifting at least on the 38t ring, some wear but they are steel, so will probably outlive all of us.
48/38/28
GONE!