Hi Jim

This is only possible with some custom CSS. Please add the following to Appearance > Customize > Theme Options > Custom CSS:

.jumbotron .carousel-inner .item { transition-property: opacity; }
.jumbotron .carousel-inner .item,
.jumbotron .carousel-inner .active.left,
.jumbotron .carousel-inner .active.right { opacity: 0; }
.jumbotron .carousel-inner .active, 
.jumbotron .carousel-inner .next.left,
.jumbotron .carousel-inner .prev.right { opacity: 1; }
.jumbotron .carousel-inner .next, 
.jumbotron .carousel-inner .prev,
.jumbotron .carousel-inner .active.left,
.jumbotron .carousel-inner .active.right { left: 0; transform: translate3d(0, 0, 0); }