Marchese, that the goblet squat and the barbell back squat are two fundamentally different things. While the OP having a nice, deep goblet squat may rightly be considered a prerequisite to working on heavy barbell back squats, I don't think there is necessarily going to be a lot of carryover from one to the other. To find one's barbell back squat depth, one needs to experiment with many of the same things as in the goblet squat, e.g., foot placement and foot turnout, but the results will be quite different, and certainly a much wider stance.
I think our OP is doing just fine - he should try to work with someone in person to help him find his back squat stance, and he may also simply need to practice more to develop the position-specific flexibility needed to back squat to legal depth.
FWIW and a bit off-topic here, I've only trained my barbell back squat seriously once or twice in my 12 years or so of lifting, and when I did, I noticed a few things:
The right stance for me was one in which is was actually challenging to just get to legal depth - that's the stance that let me handle the most weight;
My deadlift went up;
I was hungry all the time and it would have been a great way for me to move up a weight class if that was my goal.
In fact, the reason I stopped training it was just that, I was already starting to put on some muscle weight that I didn't want at the time. Now, having just turned 60, hypertrophy training is more necessary because it's more about keeping muscle than building it, and I may yet revisit the PL style back squat in my training in the future.
To the OP: Please follow Brett's suggestions - have movement screen done, work with someone in person on your squats, and post video here of both your goblet and barbell back squats.
-S-