No,what is wrong is what you said, because your sentence was true in the past, when the treasure appeared. Since 4.0 (maybe since 3.0, not sure if the change happened with 3.0 or with 4.0) is not anymore true. If you got fragments at the rate of 1-2 every 40 rolls means you rolled in that treasure before 4.0 and very likely before 3.0 too.

Put in it 120 scrolls now and look at the outcome now. 10 months ago was true now no.