iam putting my motor back togher after a topend rebuild ,in my old 787 there was no fill plug,for the counterbalance oil ,so i had to put the oil in the cylinder and let it make its way to the counterbalance, this motor has a screw plug wich i cant seem to get lose, can i put the oil in the spark plug hole?in this motor well it reach the counterbalance? they are the same motor 787 ones just a year newer they are not rfi