I'm wanting to draw in some triplets into my drum fill. What's the best way round this as I'm getting that robotic feel at present. I'm looking for that human touch
I would, initially go the normal route of adjusting Reason's snap to the appropriate resolution and get the triplets perfect first, in all their robotic glory. Then, when you've achieved the robotic drummer of your dreams, start using regroove to apply some offsets. A lot of people associate regroove with shuffles for hip hop, but there are some drummer grooves in there as well.
You could actually draw the triplets in while regroove is active, too, while running the sequencer in loop mode till you get it perfect.