Now I am more puzzled than ever. On the top row below are the two molds I use, CW 1157 (18g, 29.7mm diameter x 25mm tall) and CW 1433 (15g, 29mm x 25mm). On the bottom row is CW 2207 (14g, 29mm x 21mm), which @pastrygirl and @Kerry Beal use, and CW 2116 (14g, 29mm x 23mm), which @gfron1uses:
To me the shapes look the same. But perhaps the 4mm less tall of the third one makes a difference?