Your information is correct. Iowa wrestling was the most egregious offender; and yet, some Big Ten teams were not guilty of this violation.
As I have never posted a link before, I hope this works:
Well, perhaps if you copy and paste ....
IMHO, this advantage was HUGE. For example, instead of offering 5 good wrestlers each 0.25 scholarships, Iowa might be able to offer 5 hammers 0.60 scholarships (taking 7.39 for the 4 years; average of 1.85 per year; then dividing that by 5). That is half the starters! In the NCAA tournament, what's the point differential between that of a good wrestler and a hammer? Now, multiply that by 5 to get an idea of how much of an advantage Iowa may gain over the competition. The increased scholarship, along with the opportunity to be coached by an Olympic gold medal winner, swayed many wrestlers to choose Iowa. By the time the violation was addressed, Iowa had become the dominant power in college wrestling -- which became a compelling reason for wrestlers to choose Iowa. So it could be argued that Iowa's misinterpretation of the rules paid huge dividends -- not only when it was happening -- but, continued to pay dividends years afterward.