[jspatz1]

In 2010 (prior to the current rule allowing COTS slip rings, and in the only year we had occasion to test the issue) slip rings were not mentioned in the rules, and any type of slip ring including COTS or home-made were disallowed by the Q&A forum. Prior to that they had been allowed by the Q&A Forum on several occasions, even though they were likewise not mentioned in the rules. Now that it is specified in the rules that they are allowed but must be COTS, it would seem that the issue is pretty clear cut, however there has been unpredictability on this issue with the Q&A Forum.