First of all, I have been crushing this archery season with this crossbow. I've used 100 and 125 grain fixed and mechanical broadheads on whitetail deer within 30 yards. I harvested two does and two bucks with this crossbow. It flat out works. BUT this is the second crossbow. The first one had a center serving issue meaning it was fraying and separating after only about 20 shots. Cabela's replaced the entire thing. I was using whatever rail lube I wanted (some aftermarket stuff). Later I emailed Barnett after receiving the replacement to ask about the crossbow wax stick that came with the crossbow. They confirmed no rail lube is needed. I should use the crossbow wax as prescribed. Ever since doing that, following manufacturers guidance, center serving is still in great shape in at least 20 shots. Probably more. So probably my own fault the first one had issue :(