Check that there is no end play on the form rollers. When in "night latch" mode, they should not spin too freely. If so, tighten them up a bit. I...
I straighten a paper clip. insert it into the hole that is behind the plate leveler gauge. The paper clip also slots into a hole that is drilled...
I just pulled an Inverter from an older spare press and replaced mine, that was shutting down and giving me the E-3 signal. So far, so good...