Looking for advice for something super Vanilla-y

[KC1BLE]

I've been doing a little bit of DIY and can't seem to get the extreme vanilla flavor I am looking for. If any of you have tried the G2 Prime Vazilla, thats what I am trying to reproduce. I love vanilla and want a rich and creamy recipe that really tastes like vanilla. I have mixed the Grants vanilla Custard and its ok, but not enough vanilla flavor. I've tried adding more vanilla and it doesn't seem to change much, any suggestions? Thanks.