2010 was when the MoCo started installing the SE compensator on CVO's. The regular models weren't "upgraded" until 2012.
The compensator was changed from the time tested old design when H-D decided to redesign the primary for the 2006 Dyna/2007 other models. They took the idea from Baker to basically overdrive the primary ratio so they could make top gear in the new six speed trans a 1:1 ratio, as opposed to an overdrive ratio in the trans. It was this ratio change in the primary that really created the extra stress, more than the additional torque of the 110 over the 103. The same thing created the multitude of IPB failures, even on the TC96 bikes like the Dyna in 2006, and the rest of the models in following years. Regardless, the change was typical for H-D, poorly engineered and either not tested, or not tested to the proper standards. And typical for H-D as well, they let the customers deal with the problems for many years before they made any attempt to rectify the problems. At this point it has been nine years since the new primary design hit the street, and they still haven't come up with a robust design for the compensator. But they are more than happy to sell customers a new one every couple years, once the warranty expires. Just one more example of them making money off their mistakes.
Jerry