55-109 Spline Video

The orientation in the video looks like the spline is upside down BASED ON MY INTUITIVE ANALYSIS. I'm not yet doubting the video but I had to reuse mine while I await the new spline and I found it to fit upside down very well. No, this expert (myself) ripped it out weeks ago without noting there was a different front or back / up or down. I'll try it both ways with the new spline.