Totally agree,I once kept a machine going by having a man sit round the back and physically push a valve detent in at a certain part of the cycle as we had literally no spares!!we alerted him by a load of cans dangling on a length of electrical wire at the right point in the cycle!!!Just jobs for the boys all this iso q1 shit,as u and I both know when they want something done all that bollox goes out of the window!!!!