Thanks to Zenophon for the tips. Swiped my next-door neighbor's previously unused Madeleine pan and voila!
Funny how all the recipes online say these are very tricky but I found them a cinch. Was pleasantly surprised how good they taste too, the lemon and vanilla work very well. Now I gotta find a good source to get my own pans; am sure once my neighbor samples the ones I proffered her, she'll want to get hers back.