On the way to work this morning I heard a strange sound coming from my 12 RT Limited. When I got to work I seen that the belt was off about an 1/8" off and rubbing on the belt guard. Is there any way to correct this or should this be a shop thing
Well, Rebob, A tuffy to diagnose over the internet. But a couple of things of concern. The belt is free to, and will move back and forth a little all on it's own. Just consider how long it is and you'll understand why. That's normal, and it's normal for it to shift its position between going forward and reverse. Your Owners Manual, on page 128, has a diagram of proper belt position.
However, if it has gone mile after mile after mile, always being in spec, and then suddenly shifts, accompanied by a strange noise, then you need to look for what has changed. You talk about it rubbing the belt guard. To me, the belt guard is that plastic panel than runs along the left side of the belt. So, your belt has shifted way to the left and is hanging over the left edge of the rear sprocket and rubbing on that plastic. Would that be correct? If so, then no, the belt should never touch that or be that far over, especially after a sudden change. Front drive sprockets on the 2012 don't usually come loose, but when they do, that is the direction that the belt would shift. Last person I remember that tried to ride to the dealership under that condition didn't get there before the front drive sprocket fell off. So, you would want to check that yourself or it get to a dealer - preferably by trailer.
The other reason that the belt would suddenly shift alignment is a rear axle tightness issue or a rear bearing issue. Either of which cause a change in alignment between the rear axle and the front sprocket causing the belt to shift position.
With the proper tools, an owner can certainly perform the normal maintenance item of adjusting belt position. But, what I'm hearing you say is that this was a sudden change after a long time of the belt being properly aligned, and that it was possibly accompanied by a strange, new noise. So, if you're not set up for checking it out yourself, I would suggest a trip to the shop.