Spin them (one at a time) all the way around a couple of times with a 17 mm socket and a ratchet on the cam gear bolts. Beware, they will get easier/harder to turn, and on the backside of the lobe, they'll have some energy stored up, and will try and jump away from you.
An illustration of a Douglas-fir tree. The Douglas-fir was designated as the official state tree by the legislature in 1939. Oregon was the eighth state to name a state tree. It is named for David Douglas, a botanist who described the tree on his first trip to the Pacific Northwest in 1825.
Noble fir (Abies procera) is Oregon's premier Christmas tree. It commands a higher price than any species, up to twice the value of Douglas-fir. Noble fir is a slower growing tree (6 to 10 years) and much more genetically variable.ouglas-fir (Psuedotsuga menziesii), Oregon's state tree, has historically been the primary tree species grown for Christmas trees in the Pacific Northwest. About one-half of all trees produced annually are Douglas-fir. This tree takes 5 to 7 years to bring it to market.