Thank you for the link, I think I understand this and I shall be able to apply this a little further down the line. For now I just need to know what works (or doesn't) with the Kit I have.

On the Roadrunner GCode there is only XY&Z DRO.. No 4th motor! I could just un-enable No. 4 perhaps?

It was always my intention to slave 2 motors for the Y axis and as much as I have seen references to it I can't find any definitive instructions on how it is done.. Any links?

Re: my final question, that was my thought that the stuff supplied was just a suggestion rather than being specific.. I do feel my problems lie in this area.. understanding the PP Pins and their route..

I have not heard back from Longs yet.. we shall see..
Thanks again.