Found more info and details about some of the changes they have made to the course during their major "restoration project" they have undertaken over the last few years.
Unfortunately it would appear that the imagery I traced out on OSM initially was a bit out of date (in a lot of places at least), which is a shame as the OSM imagery I traced from matched up with the Lidar data I had almost perfectly in terms of positioning so I didn't really need to do any messing about in terms of adjusting it to match the terrain (like seems to happening most of the time).
At least it explains why I couldn't work out how certain things seemed slightly "off" in one place but then exactly right somewhere else only a few feet away when I have been working on it and checking measurements etc.....had me confused on more than one occasion I can tell you

Luckily a lot of the changes don't really affect the actual layout at all. They were things like new irrigation and sprinkler systems and completely re-laying all the cartpaths (ok I have had to shift them about slightly in places but no biggie), also changing to and laying down new types of grass for all the rough and greens etc.
However there have been significant changes or adjustments to the sizes of the greens, some of the bunkers and how some of the fairways are cut / shaped which does mean I have to make quite a lot of changes to what I already have in place. It's fairly straightforward to do, it just all takes time if I want it to be right (which of course I do).
Anyway, I may have a few more WIP pics to show you possibly later tonight.
Oh btw there are a couple of quite interesting videos on their website showing some of what they have been doing for anyone interested