I vote for tossing them in the trash bin. They were designed for the U.S. market to prevent owners and mechanics from adjusting them in a way that would increase exhaust emissions. They were set on the lean side by he factory to keep the government happy. Unless your state has some law requiring them to be in place, you can pry them off and set the mixture where the engine runs best.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
