I ran search and tried to find the inside diameter of the EGR tubes that people commonly cut when doing a partial removal/delete of the EGR valve. I really don't like the idea of filling the tube ends with JB Weld, or crimping them. I'd like to put brass plugs in the ends...but didn't know the inside dimension (diameter). Is there better way to plug these tubes if you're leaving them attached until you end up pulling the motor someday ?