Star did a pretty good job of making it so that you can swap different tool heads on different Universal machines. However, you cannot put a Progressive tool head on a Universal machine and vice verse without also changing the angle lever cam.
So did the tool head you are using come from a Progressive? If so, you will not be able to bend the angle lever cam enough to compensate.
What I asked was if the number on the angle lever cam is that same number that is stamped in the tool head in the round cut out next to where the angle lever cam mounts. If the numbers don't match (number and font), it is not the cam that was fitted to that tool head at the factory.
Bruce