If he asked about centering and you said yes, it's your baby. Don't get me started on the housing you took being the same length on each side, clue #1.
I didnt know he was centering, I guess he just does it since he builds race cars for s living... but yes the 2 inch difference in tubes was first thing I noticed when I unloaded them. And I sent him a picture of several C body housings I have here that ar equal length but he certainly isn't interested in fixing them especially on his dime or time.