If you have a suit like the following:
and you need to play for 5 winners or 4 winners with E having Jxxxx or longer (for a potential squeeze or duck, etc) is it fair to input into SuitPlay that West has 4 vacant places and that East has 7 vacant spaces and then add up the appropriate percentages yourself? (You add them yourself if, as in this problem, you can't afford to lose a trick which the "take 4 tricks percentage" takes into account. There's no way to program that into SuitPlay, is there?)
Edit: Is all I've done eliminate the lies that will fail irregardless?