I did the same thing with my Demon clone, I extended the braces to push the lower corner out to clear my 275/35/18's. I also trimmed the corner of the fender back.
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The fact the the braces aren't installed probably is why there's such a big difference side to side, but I think it's worth mentioning that after the braces are installed you should check to see if the clearance is relatively close side to side. If they still aren't close then you should check to make sure the wheels are in the right spot and the alignment is good.
