I have a question reguarding my 2010 883L. I noticed today that the underside of my rear exhaust muffler is showing some blueing. The forward one is not. Is this a problem? There have been no other issues noted. The bike has 2300 mile on it so far since Oct 2010. I was initually worried that this was a sign of the rear cyclinder running hotter. After looking for a bit and allowing my brain to catch up, I think that it might be simply because the forward exhaust pipe exits just before it causeing the added heat right there. The engine is stock and the exhaust is stock.