1987 LT 40 issue

[randy r]

1987 LT 40
Hey all I've never tried this forum but my mill is old so I thought someone on here may be an old timer.  
When I try to pinch my cant after I've squared it up and have the pinch in the lowest position, when I tightened the pinch it lifts the can't off the bed if I put even the lightest pressure on it, so guess what, not square anymore. Any thoughts or ideas from y'all?
Thanks
Randy

[LeeB]

Are your backstops square to the bed rails? Not sure about that year model but they should be adjustable. 

[Magicman]

You have some slack/wear either on the side support side as LeeB suggested or on the clamping side.  You will probably need someone to watch as the clamping pressure is applied.  Also if the clamp (pincher) is not square the cant could be "squirting" upward as pressure is applied.

[trapper]

On my 87 lt30 they are adjustable

[Jeff]

1987 LT 40
Hey all I’ve never tried this forum but my mill is old so I thought someone on here may be an old

You have 15 posts in 10 topics here and registered 10 years ago, all of which got replies, and only 2 of which did you acknowledge a reply.. ???

[John S]

Maybe your clamp is not low enough towards the bed rails.