Hi I have a deutz fahr mp130 baler and the netting system is not working right.The netter is very temperamental when you change the tension and I have a rope with me in the tractor.When I pull the rope as hard as it can go and press the button it always takes a few seconds too long to run(this has only happened recently) and if you don’t pull it hard enough the net runs on and the knife will not be activated.Is there some sort of stopper in the netter that is the problem or is it just the tension