I guess it's just the annoyance. I swap wheels and tires all the time so a 17mm hex would be a lot more convenient. I did find some random Kyosho hexes in my parts and it fit the axle perfectly with no play at all. I just need a barrel nut to secure it to the axle itself. Anywas I'm going to do some research on the 5T axles, if not I might just test out the Integy's.