I problably made five or six complete revolutions of the engine The camshafts are not turning because the chains drign the sockets are not moving. Looking in the area above the front chain, I can see that the top of the lower chain, the long one, is moving with each turn. But that movement is not being transmitted to the camshafts which drive the sprocket. One sprocket has two setscrews in tight and the other has one setscrew in tight. I was attempting to rotate the sprocket in order to put in the remaining setscrew.