Picked up a used 2012 rmz 450. It is leaking a red colored oil that is dripping from the linkage. The air filter that was on it had red oil, but I changed that out and whiped the box real good. Went back out a few days later and there is still an oil drip off the linkage. Anyone have any ideas? There isn't noticeable oil coming from the shock, but could that be it?