I bought a bit from this site. It is just the right length to pop out of the hole. However, you do still need to file down the edges near the stem in order to prevent it from scraping the holes wider.

Also, they accept paypal, which is quite handy.

Mine just arrived today! Only 7 business days to get from Germany to Canada! Only posting because I have to do something while it is flashing a new game 😀

Once mine arrives, I’ll gladly test the loader on everything I’ve got:
95, 98, 2000, and ME