Ok reinstalled my mercruiser 5.7 yesterday, I bought an alignment tool and followed all the instructions I could find in print and on Youtube. I have it aligned so the tool slips in with some (slight) resistance but the end looks like its got all the spline marks evenly around it in the grease. So my question is just how easily should this tool slip in and out of my coupler? Once I seat it into the opening it takes a good push with my thumbs to seat it to the bottom of the coupler. Pulling it out is equally resisted but not difficult. Should this thing just slip in and out like butter or what?