First off, I started this post being told that this cylinder was a SBBK model but after getting further into this project, I now know that this is a SBG model. So, if it was ever a model that printed, that part of the cylinder has all been removed and it is strictly used for diecutting and creasing.
We got the press about 10 years ago from an auction so don't really know the history but I can tell you that one of the gears on the cylinder has been hit so hard (smashed apparently before we got it) that it broke off about 1/4 to 1/3 of the tooth. Not to sure what can fall in there to break off part of a tooth.
We have not had anyone in to look at it (I'm trying to get our production manager to get someone to look at it but so far to no avail) as I do believe there is definately a mechanical issue going on here.
The bed is shaved and we have 2 steel plates, one for .918 rule and a thinner one for .937 rule.
So this is why I also believe there is a mechanical issue. When we get the die to where it would start to cut the pockets (at the tail edge of the sheet) it would start to cut the pocket on the non operator side first. Then we put in 4 score rules spaced out equally (no matrix) running vertical to the cylinder, the score rule on the non operator side cut through the paper and barely touched the paper on the operator side. Then we put 4 score rules spaced out horizontal the the cylinder and the first score was very prominent and decreased each rule after and was almost non existant on the last rule. Also, we set up with impression on heavy paper and when it barely would cut the pockets on the pocket folder, we went to light paper and then it would cut stronger. From what I was reading on another thread, when the lever in on heavy, there is more pressure on the impression cylinder for die cutting, creasing and heavy forms so moving it to light form should be less pressure but in our case, it gives more pressure.
One more thing, there is an electric switch on the operator side under the counter and to the left a bit that has two positions, 1 and 2 and our operator was told to only use number 2. Do you have any idea what this switch is for?