After a bit of research online I think I may have found a solution to the responsive height issue. There are a number of different widgets available through the Adobe Muse Resource Library. All of these cost around £7 so it will be something I need to take into consideration if I fail to find an alternative which so far I haven’t been able to.
Widgets can be found below:
http://resources.muse.adobe.com/products/responsive-height
http://resources.muse.adobe.com/products/responsive-height-widget