Here something I don't get after watching this several times....How do you connect Ray Spin ver B after doing a Ray Spin Ver D but the D ver doesn't do the first or second shell...Is there like a quick cancel or something? Mr. KOF told me that I can do that but I spend like a hour on training mode and i still don't get how it's done
You missed a few steps. Before you do qcb+D into qcb+B you should first combo into qcb+BD, f+D. The slide from ex tatsu will put them high enough so you can juggle both a qcb+D and qcb+B if you perform the qcb+D at the right time. It's not too difficult to do once you get some practice in.
So the full combo off a st.C will be
st.C, qcb+B, f+D, dp+C (DC) qcb+BD, f+D, qcb+D, qcb+B,f+B dp+C
You can repeat the combo from the dp+C (DC) qcb+BD if you wish.
If you get a random qcb+BD or combo into qcb+BD off cr.B and they are close enough to the corner you should do a qcb+B, f+B, then do the dp+C (DC) qcb+BD portion of the combo.
If you want a meterless combo it'll be
st.C, qcb+B, f+D, dp+C (DC) qcb+D, qcb+D, f+B dp+C.
Here's the full comboat 6:38 performed by me.
I ended it early with the qcb+A because I wasn't 100% if the height would allow me to connect the qcb+B.