In 1953 TWA only had 10 L-1049 Connies in stock, compared to their large fleet of L-749s, and their schedules of the time show the Transatlantic flights were all L-749As, the larger aircraft being used on US coast-to-coast services. I'm sorry to say that for the Connie in particular, extended mechanical issues when making the Atlantic crossing were an everyday occurence and not noteworthy in the slightest ! Although not shown in the timetable, stops at Keflavik, Goose Bay, and other stops along the way were also standard, it all depended on the winds.
Here's the westbound timetable for December 1953 referred to above, seems to be the same, and shows flight 967 on Monday 2 Nov 1953 exactly as you describe.
http://www.timetableimages.com/ttima...53/tw53-03.jpg
If you want to thumb through all the other timetable pages on the site start here. I think quite a number of posters here have contributed timetable collections to this site.
Airline Timetable Images - List of Complete Timetables