I have a 4g63 single overhead cam in a catcg15 lift truck. removed the head for a valve job and now have to time the cam to the flywheel. i have two questions 1 this motor has a balance shaft or a silent shaft as its called, one website says you need to remove a plug on the side of engine block insert a screwdriver to make sure the oil pump is in the proper location.first time ive ran into this and 2 on the cam timing marks it says to line the pip on cam pulley two teeth before the mark on the block which could make sense becauce it fires 10 degrees btdc. thanks in advance