sometimes things go south

So the AS10 in black and the AS20 in grey I was working on have both gone south.  I tried a new finish and it did not work out as I had hoped.  the finish was WAY to soft and as a result, I kept burning through the finish during final buff.  The stuff never really dried into a hard coat, it stayed pretty soft and was very elastic.  DAMNIT...........So now it's back to the start appying the color then 10 coats of the good hard finish I've always used.  Should have known better than to switch finishes when you have one you already like.