This is a question for all of you who have the new IRS. How did you insert the small vent tube into the 8.8 center section. My piece did not fit in at all and before I sand it down or took a hammer to it, I thought I might check on some other builders methods. Thanks. I did purchase the vent tube lines from Ford similar to what others have posted and I have modified that to my liking. Thanks for any input.