Interesting… There were no classification system changes for 2012. I compared event data from April 2011 event and April 2012 event and your points were 58 for both.
There were some minor changes to the formula for calculating base points this year. Review the other thread to see what the changes are, but I suspect you may have gained one from the LSD updates that were made. I added this after the original posting, so revisit it if you’ve already been thru the information.