Just finished replacing hyd fluid and filter. After cleaning out the screen and magnets at the rear of the machine I replaced the screen using a new rubber o ring (# M801034). I had a very hard time keeping the o ring in the groove while bolting the screen back in place. There is a small leak there now. Dose anyone know the proper torque value for the two bolts holding the screen in place. I want to check that before I drain fluid and fight with the o ring again. Thanks.