I think Jim Wagner was the #2 man up the the end of 1974. After that Paul Kalb was the second man in racing for OMC under Jack Leek.
Paul was running OMC racing in Europe and there was a lot of racing in Europe.

Did see Jim at some races after 1974 but he did not have much power.

Charlie Strang and the OMC President for Europe Beat Jenni was in charge of racing after Paul Kalb was out.
1983/84 GG and Second Effort took over.