I don't understand how people can call ANY flash carts bulky, or give them praise for not being bulky. Every card I've ever used/encountered was perfectly fine.
Even the CycloDS which is "a little thicker because of the sticker" just slides right in. My DSX fits perfectly, etc.... Seriously, it's a tiny little cart, it fits just fine. If it's causing you issues maybe you need to start doing curls with a snickers bar or something.
Maybe you were on the lucky side? mine is considerably bulky, i have the occasional hard time ejecting it.