In fairness, Spannerman was only commenting on the point raised by Sticky re the carburation for two strokes. Spanners confirmed that it was the Crosby Valley that was the point on the course where you most likely to have a seizure on two strokes. I mentioned that it was this area, because it had the coldest air, particularly in morning practice.
I don't doubt that Parliament Square is probably the lowest part of the course, but I think Sulby straight will be pretty close.
I certainly don't think that the Highlander is the lowest, just the coldest!