Form 5329 Box 43 Not Calculating Properly - Repeating Excess HSA contribution Penalty.

Because I over contributed a few years ago and was unable to rectify the situation until last year, I seem to be plagued with the **** of the Excess HSA Contribution Penalty.
HOWEVER, I've figured out this is because, I cannot affect this specific Box from this Form. The instructions say:
"If the contributions to your HSAs for 2024 are less than the maximum, enter the difference on line 43."
This difference is then added to line 45 which gets subtracted from your excess contributions on line 42. If this number is less than 0 (which it would be), then your excess contributions on line 48 would be 0. And you would be rid of this.
This software is not allowing me to do this calculation manually. Or can I? And I just don't know how?