So what I did was download the latest version of BeerSmith to start totally fresh. Numbers came out what I thought they should be for grain amounts. 2 Row - 7.5lbs, Oats and Wheat 2.5lbs each. So numbers are much better. Thanks for the suggestion about re downloading the data. Just took it a step further and downloaded the software.
Something is still odd about the amount of grain needed to hit your targets. Based on your posts, below are your targets and system wort losses. Please let me know if one of the numbers below is incorrect and I can quickly change...
Mashtun deadspace loss = .13 gallons
Rack loss from kettle to fermenter = .5 gallons
Rack loss from fermenter to bottling bucket (not noted) assumed to be .25 gallons
Rack loss from bottling bucket to bottles (not noted) assumed to be .063 gallons
Target OG of 1.060
Mash, not brewhouse, efficiency of 60%
This means for a 5 gallon batch in the fermenter you would need a post boil chilled volume of 5.5 gallons and you would end up with 4.687 gallons in the bottles
Based on these inputs you would need a much higher mash efficiency of around 77.5%. Below is a snapshot of my programs execution worksheet and grain bill plan with your recipe that has been updated to align with your system (the chilled wort volume differs due to my program accounting for a hydrometer volume loss at bottling) To hit your target OG with 12.5 pounds of grain and a post boil chilled wort volume of 5.5 gallons, you would need a 77.5% mash efficiency (based on FGAI)? Has the efficiency been changed since downloading the latest version? Just asking to help ensure you have a successful brewday.
Also, if you provide the hops, ounces, alpha acid percent and minutes boiled or dry hopped, I can let you know if the IBUs are accurate.