Laminator walking heavily

[the graphics co]

I have a gbc titan 1064 cold laminator, it is about 5 years old, and in the last 4-6 months it has begun walking heavily in one direction. the prints will walk from the left to the right Approx 2-3" in an 8ft run. Upon removing the ends of the machine i see there are some pressure adjustment screws for each side of the roller, however, i don't want to just start twisting and hope for the best. Is there a way to determine which side needs to be adjusted and by how much? Any help would be appreciated.

 

[player]

If you use a tension gauge (fish scale type) and a thin piece of sheet metal (shim stock) hooked to it you can check to see what amount of tension each end will pull on the sheet stock until it slips.

 

[the graphics co]

Is there any type of benchmarking for what the tension should be? Or, is it just an adjustment until it pulls the same tension all the way across?

 

[player]

I am not sure. I would probably use the tighter side as the benchmark and tighten the other. If it is too tight it will cause problems laminating I would guess. Not tight enough problems as well...

 

[player]

If you use shim stock make sure it has no sharp edges or burrs to damage the rollers.