I fixed the height of content slider in your site by add custom css code in venus theme control panel. I think you should use ves layerslider to load slideshow on homepage (you can change it in ves pages builder – page profile), it will work better than content slider.
As the page builder profile: http://www.garagevapeco.com/index.php/home-default/?___store=default
If you want use layerslider, I can help you config it.
About the products carousel widget you should config to choose right categories to show products on homepage. You should edit widget in pages builder too.
Answer for Proublemt with content slider & product page