I have a new Turf Tiger, 27 h.p. .with a 61 inch deck. Up until now it has performed without a lot of scalping. However today I noticed it was scalping like crazy. After checking the deck I noticed that the long bars that are threaded on each end, on either side of the frame, are missing any hardware or nuts at the rear end. I cannot tell from the manual whether it came with any. Have these just vibrated off. Help its the weekend and the shop is closed.