Gerard,
I have gone back and found the posts you refer to and I think you may just be misreading what the poster is saying.

You are assuming he only owns 6 doubles.
I think he was saying that those 6 never had OSR when he bought them and still don't, and that he has owned another double or doubles which did show evidence of OSR.
I don't see any contradictions there.

I'm pretty sure the poster would be able to clear this up pretty fast.