I just put new Hard Krome pipes on my 99 1100 Custom and pulled my carbs to rejet. Had a question on the brass fitting between the two bowls. Curious as to what this fitting is. My guess is a gas overflow, but would like to know for sure. Getting ready to put my carbs back on and just wanted to know if it should be capped or not. Thought it might have had a cap that fell off. Any advice would be greatly appreciated. Thanks!