So, the good man modify twister series X0,X9,X7 to be (all identical).
At the moment,this twister works with XX and Sram Red (both have the same reduction 1:0.8 .
The old index is milled out and replaced with one made of carbon.
Convert your old Twister will probably cost 60 (i think,it`s only the right one)
completely new set converted to 2 / 3 10 tray 119
and Twister individually converted to new 10x 99