Add more adjustments options for subtitle position

Hi… i have ripped a lot of dvd’s and playing them in infuse but subtitles are too high up in the picture and i can only see one solution… to use vertical adjustment but for some reason infuse programmers have made a range of +7 to -2… and -2 is not enough to get subtitles at the bottom… Is there another way of adjusting the subtitles? and have the developers at Infuse thought of adding a range going down a couple more? to e.g. -5 or minus 7? There is no reason of having +7 as that would put subtitles in upper part of the film… It would be FANTASTIC if possible… I love infuse and hope their developers can make this feature work also…