okay let me try to explain my problem ,i do not know the correct names for the parts so here we go , its a 1978 merc 165 out drive on 1981 165 L6 250 chevy motor, the part im refering to is what the out drive bolts onto,it sticks out of the bellhousing and moves up and down and side to side. it has on each side of it two round caps about 3inches round that covers up a bearing ,one under each cap, is it normal to have a little bit of slop in that area? thanks for viewing,