Photo by: Nicolas Cade During the off-season, most AMA Supercross riders are signing contracts and testing new setups, but the privateers of the sport are just trying to get enough funds together to race. One of the privateers that is getting ready for a full on assault in 2012 is Chris Johnson. In 2011, Chris—through circumstances out of his control—was forced to take the season off and is now looking forward to making up for…