help with live 2k3 toolkit

[x6pAcKxcL]

Hi, I'm new to the board. I just need to ask a question about the toolkit. I'm trying to play franchise with tweaked rosters. But, at the end of the season, when I try and un-tweak the ratings, some of them cannot be tweaked. I get a 10019 error.
I used DK's tweaked rosters. I go to his site to find out how he tweaked the rosters and tried to revert the effects. But can't seem to do that with certain ratings.
For example, DK multiplied dunk ratings by .79. So I would go to the megamodifier and divide it by .79 and it works!
But, for some reason when I try to untweak his multiplication of FG ratings by .50, i can't seem to do it. I get that 10019 error.
I even tried multiplying by 2, since it's the same as dividing by .50, but to no avail.
Please try and help. I really would like to play franchise with DK's great tweaks. Thanks.