I brought myself a krone baler 1250 roundpack as a little project. Have fully gone through it and have it all working apart from when I press the button to feed the net, it keeps feeding the netting and won’t stop. Looking at the two sensors on the netting system, they look fairly worn out and battered. Could this be causing the netting to not finish cycling or am I missing something. If it’s the sensors then does anyone know where to get them or what are they called. I can’t see anything on them