Gutted.
Yep the iems fit if i take the cables out! So what I've got are two sets of expensive sets of earplugs
It's the placement of where the new recessed socket is. The cable prong itself (where the cable attaches to the iem itself) rubs against the side of the ear where it sticks out. They are also quite flush with the ear so it's more awkward to take out. Aside from that "little" issue fit seems much improved. It would also explain why the klipsch which doesn't have removeable cables fit better.
Not sure what my next step is going to be, as I am rapidly becoming more and more irritated (with the situation, not inearz) now.
Cheers