Basic Genetics of a clear body
Normal - sex-linked (x-chromosome), dominant to Clearbody - sex-linked, dominant to
Ino - sex-linked recessive
just because you got a couple now does not mean he isn't split to it - I've had males split to cinnamon and not get any cinnamon's from them until their 8th or 9th clutch (with different females none of who was cinnamon)
some times a bird can be split to a mutation and it just never show up but it'll show up down the line with their babies.
I've had it happen also with males split to Opaline and Ino as well.