I have a new SX900 and disappointed that all the preset Boy's Choir voices are not fully sustaining upon release of keys while using the sustain pedal. The whole sound just dies off really quickly. Playing with the Release slider in the Voice Edit menu does not do much. I suspect the samples in these voices cannot be altered to sustain like this. The MODX choirs do not behave this way. The choirs from the free Church & Christmas pack do sustain, but those voices are from the older S series instruments and they are not as good in my opinion. The Free Play Style called "Ethereal Movie Voices" has a great sustaining choir in the 4th variation, however I am looking for a Voice, not a Style.
My question is, is there any other way they can be sustained?
If not, can anyone recommend some good choir expansion packs that do sustain at release?