recently bought at MCD Ulitmate Monster truck. It was a used Demo version. It come with Smartech tires on it. I wanted something bigger, so i bought a big set off of ebay, but it turned out the rims were too thick and i couldn't get the nut on. So i drilled them out on the outside a bit, they worked will for awhile, but then busted out a the square lock. (unfixable, trust me) Found a set of Mudslinger tires that look awsome, but they take a 15mm square lock, which I'm almost convinced doesn't exsist. (can't find them anywhere) So can anybody recommend a good set of tires for me? or help me find some 15mm square lock hubs, that will fit? The tires im running now say they are "standard size square lock" which i think is 17mm. 
