I paid $189.00 for my hunter sport as well; about 2 months ago. I've done my own lube, clean, & trigger upgrade. I found Blue lock tite on all stock screws and factory lube in said places. It is recomended that you use lock tite when you reassemble your AR. I always clean off the old and apply new when putting the AR back together.
Sounds like you do in fact have a new shooter. Clean that bore, lube that trigger/internals and lock tite it up, even scope screws. Then shoot that thing.
Eric