I have acquired a Kity 2000 machine secondhand, the original owner has had very little use of the machine apart from the planer-jointer and he told me he had never used the thicknesser part of the machine, I gave the entire thicknesser a good clean and lubrication. My problem has arisen when trying to use the thicknesser, it works fine regarding movement rollers, gear cogs etc...and timber will travel through however, the pinch rollers do not seem to be grabbing the timber en-route and The timber sticks along the way I therefore end up dragging the timber out of the machine. Any ideas please on the cause and remedy. Regards Mark