@ Prime_8 & Tovette: Cheers mates
@Darth Malice: All of the above

I intend it to be an arboretum, some big trees, a pond etc etc, covered by a geodesic dome.
But first this...
My God... this is a nightmare... I compeltely fixed all the errors with any major problems really (the only errors were on the lower bow section), I can boolean the shape perfectly, every vertex is clean and neat but imagine my horror when I saw this....
EVERY face of the lower section is suddenly messed up, I don't get it how this happened, I really don't. I need a miracle now or salvage an older saved .max and do a looooooooooooooooot of work anew.
Any idea if this is salvagable?