Hi Paul,
Here are a couple of screenshots of the EQ settings I use with my T5. The first is when I use position 1 or 2 for acoustic sounds. The second is when I use position 4 or 5 for clean electric sounds.
There isn't much difference between the two, just cut the mids a bit more with the electric sounds. With no EQ I found the bass was too loud so I needed to drop that end quite a bit. I also rolled off some of the highs as it was a bit too bright. Then I followed the curves that Eltjo (Picker2) published here a while ago with a broad drop in the mids with a narrow lift around 1 kHz to brighten it up a bit.
Hope this helps. Don't forget this is works for my setup and you will have to listen to your own to get the best settings for your system.