Pre-Boil Volume is off.. Any idea why?

Hi there... My pre-boil estimate is 6.22 gallons for a 5.5 gallon batch.. somehow I think that is off hah. Check the screenshots below and let me know if I messed up somewhere? I did add a custom piece of equipment.. could that be where the error is?

Answered you on HBT, but repeating here:

First thing that I see which does not compute is the figure for 'top up water for kettle' at 10.00 gal. Are you adding some water to the kettle prior to the boil? With a 10 gallon mash tun, it would seem to be unnecessary. If you are not adding water directly to the kettle, then this figure should be zero.

Beyond that, the 6.22 gallons looks to be right. 6.22 gal - 0.5 gal boil off = 5.72 gal. At 4% shrinkage due to thermal expansion this is 5.5 gallons post-boil. This matches your batch size in your recipe.