I have a 2016 recon. Did a complete tear down and am re-assembling. I was told it was set up good for dirt, but think it was set up for concrete. The RF caster block is marked 15 degrees, but no longer has the second pin so it can be rotated. Is the original setting 15 degrees and so since it is able to be rotated I can set it to whatever I need (thinking 10) using the graduations on top? Or is there other differences in a 15 degree block and the 10 degree I think the Recon originally came with?