Since I hate digging through the archives I'll bite. Align your rear and tension belt as per the 2,000 other posts on this subject. The one thing I do different though, is I jack up the rear, and spin the tire as if the bike were moving forward, and watch how the belt tracks. If it tracks against one side of the pulley or the other, adjust the alignment until it tracks in the center. I would not go more than 1/8" out of alignment to get the belt tracking properly, but unless you have other issues you shouldn't have to. On my left side drive, I have about a credit card's thickness on either side of the belt while spinning the rear, and yes, I have to knock the rear a little less than 1/16" out of alignment to achieve this. Double check the tension, and this should fix the squeal. I had major issues, tried everything, dealer aligned it, wd40, soap, etc on the sides of the belt, and lived with this friggin problem for about 5k miles before a guy who has been building bikes longer then I've been walking this earth showed me this method. Since then the problem has been solved.