Hey Jeff,
I just welded up the exhaust on the Kirkham, with about 10 degrees, maybe a tiny bitmmore, on the turn downs. I'm not sure where ypu are located in Chicago but I'm just north of Elgin, and south of Dundee, if you are interested in checking them out in person. I found a good method of measuring the amount of angle so that they are both the same on each side. I'll PM you.
Here are some pics of the turn downs. It is nothing radical but will help a bit with the sound.
Arnaud
