ROR chainstay specs

Greetings everyone,

I was wondering if anyone has any knowledge regarding the differences among the various manufacturers in how they position the oval portion of their ROR chainstays. I ask because I have a ROR set of Deda Tre CS's and there's a point where the CS won't go into a round CS port of lugged BB shell any further due the change in shape and you can't get the CS length any shorter from that end. However, with a pair of Zona CS's that I used once it was no problem as the oval portion was positioned closer to the dropout end. Any observations with True Temper stuff? Nova brand? Are the oval sections positioned differently with s-bend stays? Stuff like that...

Thanks,
Hansen