Looks like they have done a “wells”. Shorter cylinder and longer cylinder head to accommodate the extra tappet travel gel needs over those… “traditional” V2 gearboxes.
The old cylinder is 70mm, new one is indeed 72. I’ll take 2mm off over the weekend.
wtf is going on there, I said file not a 9" 
The belt sander/disc sander combo may have been too aggressive 
In all seriousness though I thought a piece of stainless would be fine. $30 Lesson learned!
Order that green og one, that will be the right size and save stuffing around 