Thank you for the suggestion, but I did that exactly, i.e. entering a Partner Percentage to the screen Partner Percentages, which could get the correct beginning capital balance (but which was not the correct percentage of that partner's beginning percentage).  But this attempt did not work, because the program calculates the beginning capital balance by using the current year's ENDING percentage.  No matter whatever and however I tried and attempted, the K-1's Beginning Capital was calculated by the program's using Ending Percentage.