Tom
The more I test this the more is acts exactly the same as the 1025px bug issue.
By that I mean the site format changes for the better or worse at the exactly same percentages as last time.
67% 110% 125% 150% are all showing problems just like the 1025px bug was whereas 75% 90% and 175% show the site as it should be, again exactly like the 1025px bug was acting.
Surely its got to be a grid issue ?
Cheers