You're shooting a switchback at 68#. That bow should be able to shoot one pin out to 30 yards. If it's tuned properly your broadhead flight shouldn't be dramatically different. You might be an inch or two off but you shouldn't be missing the entire target unless you've got some serious tuning issues. I'd take it to a good bow shop and have it paper tuned.

I don't understand how guys can shoot 5 pins. To me thats too many but I hunt whitetail in Michigan and only shoot 30 yards or less. One pin works for me out to 30 yds. Maybe if you're into competitive league shooting you might want 5 pins but for hunting I like 1 pin.