Welcome to Coffee Snobs LotR.
To answer your question: It is probably close enough but it also depends on the grind setting and freshness of the beans for it to be spot on.
It may have been when it was last set but is surely not now.
Tell us more about your experience and where you are.
I think you are a candidate for some training.
If you think its booming now it could be much better if you understood what you should be doing to make excellent coffee.
The new location may be the reason for the increase in coffee sales.
The customers maybe just trying you out for a start.
What is the rest of the business?
Bad coffee can result in loss of overall business or at the very least a downtun in the coffee sales.
I visit some places for the food but wont touch the coffee.
If theres better coffee and the food is just as good somewhere nearby, guess where the customers will end up?