Yes. And packages in general. Vertical bow package deals use to contains some crappy components as well.It is quiet but the problem is the scope. I am guessing that most lower end Xbows have the same type of problems.
Either to keep the price down, or to get rid of shelf huggers.
My MK XB52 (the Sniper370 original from Taiwan) came with a better scope, at €250,- regular price.
I believe the add-ons are the responsibility of the contractee, Center Point in your case.