CIM Mojito/Cardamom incompatibility

[SilverGems89]

Hi everyone,
I made a lentil last night that was half CIM Mojito and half Cardamom, with some sis and silver wire between the two, it looked lovely going into the kiln! Just been and opened her up to find big incompatibility cracks in the Mojito  I was just wondering if anyone had experienced any incompatibility with either of these glasses? I've used Mojito many a time before with sis so do not believe that would be to blame and haven't heard any report of cardamom cracking 

[Helen G]

I find cardamom cracks in lentils over 20mm 

[SilverGems89]

That's interesting Helen! The lentil was 25mm, but only half cardamom, and it seems to be only the mojito that cracked!