Hi, I also had problems getting 14mm allen - eventually found at a local tool supplier for approx. $10. Have a question, I replaced my manual trans oil about a months ago and since then the drain plug seems to be leaky. If my (bad) memory is correct, it had an oring on the drain plug which I did not change. I am now afraid this is leaking. Does anyone here know if you are supposed to replace this seal and any ideas what the P/N is ? Thank You