I have a Martin Yale paper folding machine (model # P7200) that is crinkling paper as it goes through the rollers. Some come out fine but about 25% come out severely mis-folded (the folds aren't equidistant or straight) and mangled (paper has creases where there should be none). About another 25% come out just mangled. I have tried adjusting the folder guides but this seems to be a problem with the intake guides or the rollers (?).

Can anyone help?

Thanks!
-Jackie