Was it any where near? How was it different? Sweeter not sweet enough. VBIC has a bit of a sharp note in the background, almost a very light cinnamon or super light pepper. Is that present in the store bought.
The store bought was undoubtedly a mix of several flavors. The store description is weak at best (much like Vanilla Ice). Your going to have to give us some more direction in what you are trying to achieve here.
My first mixes were with TFA and Cap at 8% Didn't like the TFa. My taste buds are shot so it will be a trial, I have
Vanilla Bean Gelato Flavor by TFA / TPA
Vanilla Bean Ice Cream Flavor by FlavorWest
Vanilla Ice Cream Flavor By Liquid Barn
Vanilla Swirl Flavor by TFA / TPA
All steeping right now