Cheers for bobbing round today craigyb, was good to meet someone from here. Will try put it in the different ratios and in to diff lock just to give it a little run in each, tomorrow.
Ended up spending the rest of today fitting that light bar and wiring it all up. Just had a bit of a problem with the fuses blowing unfortunately. They're all wired up ok and work with a higher rated fuse, but with the supplied 30 Amp fuses they just keep blowing when turned on.