2apss.com has them
BTW: AeroParts and Supply Southwest shows them: 2APSS DOTCOM On another note I have two rebuilt SLICK MAGS removed from my IO-540 D4A5 for sale if needed at the cost of rebuild without having to pay any $500 core charges. I think one was about $900 and the other $700 I now have SureFly Mag. PM if interested, ED