I emailed Furrion customer service yesterday, 5/27. I received a very prompt reply today which stated "There are only 2 flame heights High and medium. It really does not have a simmer mode."
So I am now looking at ripping out the cooktop and oven as my wife doesn't like either one. My bad. I figured new design = better design. Actually, new design = new design.
Just in case FR rep is reading this maybe someone can influence Furrion to redesign their product to actually be a better product not just look better.