I also reported a leaking issue earlier in this thread, and I have a white eMini that I bought in late November.
I don't know what these "notches" or "grooves" look like, but I don't think I have them.
There are two small shallow groves or indentations in the lid, about 10mm x 3mm each. The line up over the seams of the ecig when the lid is closed.
if you have them they are obvious to see.
Edit - or see pic above
