....there be in the 'kingpin' that holds my 54'' plow blade to the mounting bracket/lift frame assembly? i've got the power up/down and left/right. was grading the drive today, and after i put it back in the garage i noticed the blade moved a bit after i shut the tractor off and lowered the blade to the concrete. looks like its loose at the one large bolt that the blade pivots on. maybe i just don't remember or never paid attention to it, but i used to think that it was nice and tight. looked underneath it tonight with the blade up, but didn't notice anything out of place. can anyone learn me real quick on this?