After checking on the internet I found out that the current MAME Mortal Kombat 3 World Record achieved by ZaQ was achieved using a technique that I feel should be banned from using. The record was achieved by pressing the insert coin button to skip past sequences between rounds and between fights. It can make each fight around 8 seconds faster than normal. So I feel there should be a rule change disallowing the use of the insert coin button after a record attempt has been started. This is obviously because it goes against the way the game is normally supposed to be played.