The problem I was havign came from what i think may be a typo, but if not, it sorts out the problem.
For some reason, I was getting a really narrow section on my venues page, giving all the info, then the map on the far right.
Line 316 of the-events-candar/resources/events.css had the following line:
#tribe-events-event-meta .column {
Which I then changed to:
#tribe-events-event-meta .column-location {
This solved the problem, and meant I didn’t have the white space that looked ugly.