I was cleaning my 07 America yesterday morning, and noticed a gap between a cap or plug on the right side of the engine next to the serial number and it looked melted. Called my local shop and could not reach them on phone. Went to check out bike bandit to locate this part. Bike bandit listed a bunch of variations for crankcases and some had what looked like a cap or plug and some didn't. The hole on casing is beveled and I don't know what the purpose is. Can anyone help me out hear? I went to the hardward store and put a small rubber plug in it. I warmed up the bike and it seamed to work. I am heading out in two weeks for long riding weekend and will probably put 500-600 miles on my bike and don't want to have an issue.

HELP????

Thanks