I'm having a problem with the diameter of a cylinder in the CSWP sample test, question 1. The sample calls for the dimension to be an equation, Y = B/3 + 10mm. I set this up in my equations folder. Somehow my equation is making this diameter a bit too large which throws off the mass of the part. I am getting 14207.72g where the correct answer, I beleive, is 14207.34g. My figure is nowhere near close enough to pass.

I've built the part a half dozen different ways always with the same result. I located, downloaded and a correct part for comparison from these forrums and this diameter is the only feature that is off in my model. In this case "Y" is 76.666...to infinity. The units are to be set to 2 decimal places which makes it 76.67. If I manually enter 76.666666666666, I get 14207.35g. That is close enough to pass according to Mike Puckett in this thread: https://forum.solidworks.com/message/122302#122302 where he states the answers must be +/- .01g (near the bottom of page). It's not close enough for me though because I know others have found the exact solution. Any idea what I'm doing wrong? I've been searching these forums and youtube all day with no luck.

I'm using V2013 SP2 prem.