[Cardinal Rule]

I did further testing last night and was able to get the full import from Lahman for 1971-1975, and was able to at least get the imports started for 1976-1978. I had to kill these latter imports partway through because I didn't have the time to let the import complete, but the progress after 45 minutes on each was into the double digit % complete which would seem to indicate the same general time to import that I was seeing on the other 1970's imports. So it would now seem that 1979 is the first year I encounter the problem.

I did not have a chance to try 1968 which solarkev indicated was his problem year, nor did I have time to re-try 1979 or 1980, but if I have some time tonight or tomorrow I will try these years.