Geoff, I noticed that your website header graphic is preventing your FirstGenFirebird forums from being completely mobile friendly (responsive). I'd like to suggest that until you are able to resolve this, that you toggle the "Disable Viewport" setting at Control Panel > Primary.

Quote
Disable Viewport
This will disable the viewport. The viewport element allows your forums to conform to devices with smaller screens, such as smartphones and tablets.

This feature was added in UBB.threads 7.6.1
SOURCE: https://www.ubbcentral.com/forums/u...e-ubb-threads-7-6-1-changelog#Post260649
Quote
[NEW] Responsive layout on mobile devices (viewport) can be disabled from the Control Panel. This setting disables responsive pages for mobile devices such as smartphones and tablets. All pages viewed on mobile devices will have a desktop style layout similar to the old non-mobile versions of UBB.threads (v7.5.x and older).


Current developer of UBB.threads PHP Forum Software
Current Release: UBBT 7.7.5 // Preview: UBBT 8.0.0
isaac @ id242.com // my forum @ CelicaHobby.com