Stu, getting used to the many options on the RB6 setup sheet can take a little time but trust me, it's not a complicated car to set up
Always happy to help any way I can and I can assure you that latest setup will be a good place to start as confirmed by several drivers of different abilities who have tried it now. Most important thing is to use ALL of the setup as even the seemingly insignificant things can be really important!
If it doesn't work for you then please let me know and I'll do my best to help tune it to suit you. I'd ask you to think about how the car feels through the corner, entry/mid and exit separately as that will help me help you tune.
Hope you enjoy it