B3 has an oversized cleft that is aimed at an extreme edge size over a extreme spine size, could be the same sort of thing fort he ck22?
The ck22 i have seen have not been from what i would call a oversized cleft i believe it is the density more than oversized like the crown clefts of b3.
I have seen a few oversized clefts but not a low density oversized if that makes sense..
JB i believe was made from a normal low density cleft as the dimensions you would be able to get out of a normal cleft albee it a very light one like my crown bat.