Can you show us a side picture of your drop? Those are always where the biggest and most glaring problems are in B&M hypers. It's as if, when B&M redesigned their drop, they said "let's see how awkward we can make this shaping so that nobody will ever be able to accurately recreate a B&M hyper ever again"...
there's a better side angle of a real B&M hypercoaster's drop.
Next thing: how many coasters have you made in NL? If you're still what most would call a n00b, I
highly recommend sticking to a particular manufacturer's style. Not only do you have more references to go off of, but it also makes it easier for really experienced designers to critique it more thoroughly. With that said, "not sticking to ______'s style" is also not a valid excuse for shitty trackwork.