That incident sounds like my approaches used to be at Barton, my instructor had to make a few interventions to ensure a safe landing. I have been involved in two incidents at Barton in the Tomahawks though. I encountered an ASI failure and a bird strike (on seperate days). Both of which were in G-BOUD, on a wednesday afternoon with the same instructor. Needless to say, I haven't flown with that instructor or in that plane again!!