No need to be in contact with Merz or force him to do something he doesn't want to, just contact Highpath Engineering in the UK; they will make whatever you want, and they have always done exceptional work for me.
http://www.argonet.co.uk/
My polished and drilled new rings from them for my Stronglight 99 double (46-28-- who needs/wants a triple?), very retro French in function and style, are beautiful and shift very well indeed.
Ken Wehrenberg, very cold in Hermann, MO, but SB, CA next week